electron/patches/chromium/pepper_plugin_support.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: deepak1556 <hop2deep@gmail.com>
Date: Thu, 20 Sep 2018 17:46:17 -0700
Subject: pepper plugin support

This tweaks Chrome's pepper flash and PDF plugin support to make it
usable from Electron.

diff --git a/chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc b/chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc
index 2e328c0fb5a6598c3ae911655b3e5016a02b7405..304364f7e02c19d2ad7d16433e92dcfecfc8eb41 100644
--- a/chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc
+++ b/chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc
@@ -11,6 +11,7 @@
 #include "chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h"
 #include "chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h"
 #include "content/public/browser/browser_ppapi_host.h"
+#include "electron/buildflags/buildflags.h"
 #include "ppapi/host/message_filter_host.h"
 #include "ppapi/host/ppapi_host.h"
 #include "ppapi/host/resource_host.h"
@@ -52,6 +53,7 @@ ChromeBrowserPepperHostFactory::CreateResourceHost(
     }
   }
 
+#if BUILDFLAG(ENABLE_PEPPER_FLASH)
   // Flash interfaces.
   if (host_->GetPpapiHost()->permissions().HasPermission(
           ppapi::PERMISSION_FLASH)) {
@@ -70,6 +72,7 @@ ChromeBrowserPepperHostFactory::CreateResourceHost(
             new PepperFlashDRMHost(host_, instance, resource));
     }
   }
+#endif
 
   // Permissions for the following interfaces will be checked at the
   // time of the corresponding instance's methods calls (because
diff --git a/chrome/browser/renderer_host/pepper/pepper_broker_message_filter.cc b/chrome/browser/renderer_host/pepper/pepper_broker_message_filter.cc
index 82fa5b7026e62cfe69700f30fcc84731fc30afe8..f4ad9fbc72a5cb27ed22ab014ccb2fcb4cb49284 100644
--- a/chrome/browser/renderer_host/pepper/pepper_broker_message_filter.cc
+++ b/chrome/browser/renderer_host/pepper/pepper_broker_message_filter.cc
@@ -6,10 +6,12 @@
 
 #include <string>
 
+#if 0
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
+#endif
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/browser_thread.h"
@@ -58,6 +60,7 @@ int32_t PepperBrokerMessageFilter::OnIsAllowed(
       RenderProcessHost::FromID(render_process_id_);
   if (!render_process_host)
     return PP_ERROR_FAILED;
+#if 0
   Profile* profile =
       Profile::FromBrowserContext(render_process_host->GetBrowserContext());
   HostContentSettingsMap* content_settings =
@@ -67,5 +70,6 @@ int32_t PepperBrokerMessageFilter::OnIsAllowed(
       std::string());
   if (setting == CONTENT_SETTING_ALLOW)
     return PP_OK;
-  return PP_ERROR_FAILED;
+#endif
+  return PP_OK;
 }
diff --git a/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.cc b/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.cc
index 839b95e6a27e1296bae5e1bc98d5aedd7b2c3041..677b65e44440825d7fbba18f736ff970a8da3559 100644
--- a/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.cc
+++ b/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.cc
@@ -7,9 +7,11 @@
 #include "base/bind.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#if 0
 #include "chrome/browser/content_settings/cookie_settings_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/content_settings/core/browser/cookie_settings.h"
+#endif
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/browser_task_traits.h"
@@ -40,6 +42,7 @@ using content::RenderProcessHost;
 
 namespace {
 
+#if 0
 // Get the CookieSettings on the UI thread for the given render process ID.
 scoped_refptr<content_settings::CookieSettings> GetCookieSettings(
     int render_process_id) {
@@ -53,6 +56,7 @@ scoped_refptr<content_settings::CookieSettings> GetCookieSettings(
   }
   return nullptr;
 }
+#endif
 
 void BindWakeLockProviderOnUIThread(
     mojo::PendingReceiver<device::mojom::WakeLockProvider> receiver) {
@@ -66,7 +70,9 @@ PepperFlashBrowserHost::PepperFlashBrowserHost(BrowserPpapiHost* host,
                                                PP_Instance instance,
                                                PP_Resource resource)
     : ResourceHost(host->GetPpapiHost(), instance, resource),
+#if 0
       host_(host),
+#endif
       delay_timer_(FROM_HERE,
                    base::TimeDelta::FromSeconds(45),
                    this,
@@ -119,6 +125,7 @@ int32_t PepperFlashBrowserHost::OnGetLocalTimeZoneOffset(
 
 int32_t PepperFlashBrowserHost::OnGetLocalDataRestrictions(
     ppapi::host::HostMessageContext* context) {
+#if 0
   // Getting the Flash LSO settings requires using the CookieSettings which
   // belong to the profile which lives on the UI thread. We lazily initialize
   // |cookie_settings_| by grabbing the reference from the UI thread and then
@@ -138,9 +145,11 @@ int32_t PepperFlashBrowserHost::OnGetLocalDataRestrictions(
                        context->MakeReplyMessageContext(), document_url,
                        plugin_url));
   }
-  return PP_OK_COMPLETIONPENDING;
+#endif
+  return PP_FLASHLSORESTRICTIONS_IN_MEMORY;
 }
 
+#if 0
 void PepperFlashBrowserHost::GetLocalDataRestrictions(
     ppapi::host::ReplyMessageContext reply_context,
     const GURL& document_url,
@@ -169,6 +178,7 @@ void PepperFlashBrowserHost::GetLocalDataRestrictions(
             PpapiPluginMsg_Flash_GetLocalDataRestrictionsReply(
                 static_cast<int32_t>(restrictions)));
 }
+#endif
 
 device::mojom::WakeLock* PepperFlashBrowserHost::GetWakeLock() {
   // Here is a lazy binding, and will not reconnect after connection error.
diff --git a/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h b/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h
index 6b13bae8def62d9a26d68ac8396b4bf6f7439c1a..d92b5a5855c0cebf94922a31f686e15e3a6cd833 100644
--- a/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h
+++ b/chrome/browser/renderer_host/pepper/pepper_flash_browser_host.h
@@ -24,9 +24,11 @@ namespace content {
 class BrowserPpapiHost;
 }
 
+#if 0
 namespace content_settings {
 class CookieSettings;
 }
+#endif
 
 class GURL;
 
@@ -50,15 +52,19 @@ class PepperFlashBrowserHost : public ppapi::host::ResourceHost {
       const base::Time& t);
   int32_t OnGetLocalDataRestrictions(ppapi::host::HostMessageContext* context);
 
+#if 0
   void GetLocalDataRestrictions(
       ppapi::host::ReplyMessageContext reply_context,
       const GURL& document_url,
       const GURL& plugin_url,
       scoped_refptr<content_settings::CookieSettings> cookie_settings);
+#endif
 
   device::mojom::WakeLock* GetWakeLock();
 
+#if 0
   content::BrowserPpapiHost* host_;
+#endif
   int render_process_id_;
 
   // Requests a wake lock to prevent going to sleep, and a timer to cancel it
@@ -66,8 +72,10 @@ class PepperFlashBrowserHost : public ppapi::host::ResourceHost {
   mojo::Remote<device::mojom::WakeLock> wake_lock_;
   base::DelayTimer delay_timer_;
 
+#if 0
   // For fetching the Flash LSO settings.
   scoped_refptr<content_settings::CookieSettings> cookie_settings_;
+#endif
   base::WeakPtrFactory<PepperFlashBrowserHost> weak_factory_{this};
 
   DISALLOW_COPY_AND_ASSIGN(PepperFlashBrowserHost);
diff --git a/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.cc b/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.cc
index 7b774366e2ebd2405e0b85cdfbf1885c394afd0d..26996b7540d652ddb454cbb2fe3510d2a8aa31bf 100644
--- a/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.cc
+++ b/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.cc
@@ -20,6 +20,7 @@
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/common/pepper_plugin_info.h"
+#include "net/base/network_interfaces.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/host/dispatch_host_message.h"
 #include "ppapi/host/host_message_context.h"
@@ -127,7 +128,9 @@ PepperFlashDRMHost::PepperFlashDRMHost(BrowserPpapiHost* host,
   content::ChildProcessSecurityPolicy::GetInstance()->GrantReadFile(
       render_process_id, voucher_file);
 
+#if 0
   fetcher_ = new DeviceIDFetcher(render_process_id);
+#endif
   monitor_finder_ = new MonitorFinder(render_process_id, render_frame_id);
   monitor_finder_->GetMonitor();
 }
@@ -150,12 +153,18 @@ int32_t PepperFlashDRMHost::OnResourceMessageReceived(
 
 int32_t PepperFlashDRMHost::OnHostMsgGetDeviceID(
     ppapi::host::HostMessageContext* context) {
+#if 0
   if (!fetcher_->Start(base::Bind(&PepperFlashDRMHost::GotDeviceID,
                                   weak_factory_.GetWeakPtr(),
                                   context->MakeReplyMessageContext()))) {
     return PP_ERROR_INPROGRESS;
   }
-  return PP_OK_COMPLETIONPENDING;
+#endif
+  static std::string id;
+  if (id.empty())
+    id = net::GetHostName();
+  context->reply_msg = PpapiPluginMsg_FlashDRM_GetDeviceIDReply(id);
+  return PP_OK;
 }
 
 int32_t PepperFlashDRMHost::OnHostMsgGetHmonitor(
@@ -184,6 +193,7 @@ int32_t PepperFlashDRMHost::OnHostMsgMonitorIsExternal(
   return PP_OK;
 }
 
+#if 0
 void PepperFlashDRMHost::GotDeviceID(
     ppapi::host::ReplyMessageContext reply_context,
     const std::string& id,
@@ -196,3 +206,4 @@ void PepperFlashDRMHost::GotDeviceID(
   host()->SendReply(reply_context,
                     PpapiPluginMsg_FlashDRM_GetDeviceIDReply(id));
 }
+#endif
diff --git a/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h b/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h
index b9d2ce7f7f6837ee7b304daac82d21a3147c6faf..4d4b023d62d12b4d119acbfdee64f4157494ccb3 100644
--- a/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h
+++ b/chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h
@@ -11,7 +11,9 @@
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#if 0
 #include "chrome/browser/renderer_host/pepper/device_id_fetcher.h"
+#endif
 #include "ppapi/host/host_message_context.h"
 #include "ppapi/host/resource_host.h"
 
@@ -49,7 +51,9 @@ class PepperFlashDRMHost : public ppapi::host::ResourceHost {
                    const std::string& id,
                    int32_t result);
 
+#if 0
   scoped_refptr<DeviceIDFetcher> fetcher_;
+#endif
   scoped_refptr<MonitorFinder> monitor_finder_;
 
   base::WeakPtrFactory<PepperFlashDRMHost> weak_factory_{this};
diff --git a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
index 0a04a1e0ec56126a7e44537141d024332b22a190..5384d7ac2f2eaf708bf001dd885f401783ac7133 100644
--- a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
+++ b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
@@ -7,17 +7,21 @@
 #include <stddef.h>
 
 #include "base/stl_util.h"
+#if 0
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pepper_permission_util.h"
+#endif
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_view_host.h"
+#if 0
 #include "extensions/buildflags/buildflags.h"
+#endif
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/host/dispatch_host_message.h"
 #include "ppapi/host/host_message_context.h"
@@ -26,12 +30,11 @@
 #include "ppapi/shared_impl/file_system_util.h"
 #include "storage/browser/file_system/isolated_context.h"
 
-#if BUILDFLAG(ENABLE_EXTENSIONS)
+#if 0
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
-#endif
 
 namespace {
 
@@ -41,6 +44,7 @@ const char* kPredefinedAllowedCrxFsOrigins[] = {
 };
 
 }  // namespace
+#endif
 
 // static
 PepperIsolatedFileSystemMessageFilter*
@@ -68,8 +72,10 @@ PepperIsolatedFileSystemMessageFilter::PepperIsolatedFileSystemMessageFilter(
       profile_directory_(profile_directory),
       document_url_(document_url),
       ppapi_host_(ppapi_host) {
+#if 0
   for (size_t i = 0; i < base::size(kPredefinedAllowedCrxFsOrigins); ++i)
     allowed_crxfs_origins_.insert(kPredefinedAllowedCrxFsOrigins[i]);
+#endif
 }
 
 PepperIsolatedFileSystemMessageFilter::
@@ -94,6 +100,7 @@ int32_t PepperIsolatedFileSystemMessageFilter::OnResourceMessageReceived(
   return PP_ERROR_FAILED;
 }
 
+#if 0
 Profile* PepperIsolatedFileSystemMessageFilter::GetProfile() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   ProfileManager* profile_manager = g_browser_process->profile_manager();
@@ -120,6 +127,7 @@ PepperIsolatedFileSystemMessageFilter::CreateCrxFileSystem(Profile* profile) {
   return storage::IsolatedContext::ScopedFSHandle();
 #endif
 }
+#endif
 
 int32_t PepperIsolatedFileSystemMessageFilter::OnOpenFileSystem(
     ppapi::host::HostMessageContext* context,
@@ -128,7 +136,7 @@ int32_t PepperIsolatedFileSystemMessageFilter::OnOpenFileSystem(
     case PP_ISOLATEDFILESYSTEMTYPE_PRIVATE_INVALID:
       break;
     case PP_ISOLATEDFILESYSTEMTYPE_PRIVATE_CRX:
-      return OpenCrxFileSystem(context);
+      return PP_ERROR_NOTSUPPORTED;
     case PP_ISOLATEDFILESYSTEMTYPE_PRIVATE_PLUGINPRIVATE:
       return OpenPluginPrivateFileSystem(context);
   }
@@ -138,6 +146,7 @@ int32_t PepperIsolatedFileSystemMessageFilter::OnOpenFileSystem(
   return PP_ERROR_FAILED;
 }
 
+#if 0
 int32_t PepperIsolatedFileSystemMessageFilter::OpenCrxFileSystem(
     ppapi::host::HostMessageContext* context) {
 #if BUILDFLAG(ENABLE_EXTENSIONS)
@@ -178,6 +187,7 @@ int32_t PepperIsolatedFileSystemMessageFilter::OpenCrxFileSystem(
   return PP_ERROR_NOTSUPPORTED;
 #endif
 }
+#endif
 
 int32_t PepperIsolatedFileSystemMessageFilter::OpenPluginPrivateFileSystem(
     ppapi::host::HostMessageContext* context) {
diff --git a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h
index 56a23e8f41bb418d414f11af5797b30571d4cc2b..6f9f577f16de80dd2ab194b557bbd9ec89599280 100644
--- a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h
+++ b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h
@@ -20,7 +20,9 @@
 #include "storage/browser/file_system/isolated_context.h"
 #include "url/gurl.h"
 
+#if 0
 class Profile;
+#endif
 
 namespace content {
 class BrowserPpapiHost;
@@ -54,6 +56,7 @@ class PepperIsolatedFileSystemMessageFilter
 
   ~PepperIsolatedFileSystemMessageFilter() override;
 
+#if 0
   Profile* GetProfile();
 
   // Returns filesystem id of isolated filesystem if valid, or empty string
@@ -61,10 +64,13 @@ class PepperIsolatedFileSystemMessageFilter
   // allows access on that thread.
   storage::IsolatedContext::ScopedFSHandle CreateCrxFileSystem(
       Profile* profile);
+#endif
 
   int32_t OnOpenFileSystem(ppapi::host::HostMessageContext* context,
                            PP_IsolatedFileSystemType_Private type);
+#if 0
   int32_t OpenCrxFileSystem(ppapi::host::HostMessageContext* context);
+#endif
   int32_t OpenPluginPrivateFileSystem(ppapi::host::HostMessageContext* context);
 
   const int render_process_id_;
@@ -75,8 +81,10 @@ class PepperIsolatedFileSystemMessageFilter
   // Not owned by this object.
   ppapi::host::PpapiHost* ppapi_host_;
 
+#if 0
   // Set of origins that can use CrxFs private APIs from NaCl.
   std::set<std::string> allowed_crxfs_origins_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(PepperIsolatedFileSystemMessageFilter);
 };
diff --git a/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc b/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
index 375ca0233a74ef6a6e91102947ce0b63585d48ff..1c4bb268c5bd21126551414b1864d495a07844b6 100644
--- a/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
+++ b/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
@@ -10,8 +10,13 @@
 #include "chrome/renderer/pepper/pepper_flash_fullscreen_host.h"
 #include "chrome/renderer/pepper/pepper_flash_menu_host.h"
 #include "chrome/renderer/pepper/pepper_flash_renderer_host.h"
+#if 0
 #include "chrome/renderer/pepper/pepper_uma_host.h"
+#endif
+#include "electron/buildflags/buildflags.h"
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
 #include "components/pdf/renderer/pepper_pdf_host.h"
+#endif
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "ppapi/host/ppapi_host.h"
 #include "ppapi/host/resource_host.h"
@@ -39,6 +44,7 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
   if (!host_->IsValidInstance(instance))
     return nullptr;
 
+#if BUILDFLAG(ENABLE_PEPPER_FLASH)
   if (host_->GetPpapiHost()->permissions().HasPermission(
           ppapi::PERMISSION_FLASH)) {
     switch (message.type()) {
@@ -61,10 +67,12 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
       }
     }
   }
+#endif
 
   // TODO(raymes): PDF also needs access to the FlashFontFileHost currently.
   // We should either rename PPB_FlashFont_File to PPB_FontFile_Private or get
   // rid of its use in PDF if possible.
+#if BUILDFLAG(ENABLE_PEPPER_FLASH) || BUILDFLAG(ENABLE_PDF_VIEWER)
   if (host_->GetPpapiHost()->permissions().HasPermission(
           ppapi::PERMISSION_FLASH) ||
       host_->GetPpapiHost()->permissions().HasPermission(
@@ -80,12 +88,16 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
         }
         break;
       }
+#if BUILDFLAG(ENABLE_PEPPER_FLASH)
       case PpapiHostMsg_FlashDRM_Create::ID:
         return std::make_unique<PepperFlashDRMRendererHost>(host_, instance,
                                                             resource);
+#endif
     }
   }
+#endif
 
+#if BUILDFLAG(ENABLE_PDF_VIEWER)
   if (host_->GetPpapiHost()->permissions().HasPermission(
           ppapi::PERMISSION_PDF)) {
     switch (message.type()) {
@@ -94,7 +106,9 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
       }
     }
   }
+#endif
 
+#if 0
   // Permissions for the following interfaces will be checked at the
   // time of the corresponding instance's method calls.  Currently these
   // interfaces are available only for whitelisted apps which may not have
@@ -104,6 +118,7 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
       return std::make_unique<PepperUMAHost>(host_, instance, resource);
     }
   }
+#endif
 
   return nullptr;
 }
diff --git a/chrome/renderer/pepper/pepper_flash_renderer_host.cc b/chrome/renderer/pepper/pepper_flash_renderer_host.cc
index fc3ef9c9888d84c993fe7682afef0a188da12894..fb5782894ed8aa9fd7ccff09cff8d7f5520af8dd 100644
--- a/chrome/renderer/pepper/pepper_flash_renderer_host.cc
+++ b/chrome/renderer/pepper/pepper_flash_renderer_host.cc
@@ -13,7 +13,9 @@
 #include "base/no_destructor.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
+#if 0
 #include "components/pdf/renderer/pepper_pdf_host.h"
+#endif
 #include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
@@ -133,9 +135,11 @@ bool IsSimpleHeader(const std::string& lower_case_header_name,
 }
 
 void RecordFlashNavigateUsage(FlashNavigateUsage usage) {
+#if 0
   DCHECK_NE(FLASH_NAVIGATE_USAGE_ENUM_COUNT, usage);
   UMA_HISTOGRAM_ENUMERATION(
       "Plugin.FlashNavigateUsage", usage, FLASH_NAVIGATE_USAGE_ENUM_COUNT);
+#endif
 }
 
 }  // namespace
@@ -374,6 +378,8 @@ int32_t PepperFlashRendererHost::OnIsRectTopmost(
 
 int32_t PepperFlashRendererHost::OnInvokePrinting(
     ppapi::host::HostMessageContext* host_context) {
+#if 0
   pdf::PepperPDFHost::InvokePrintingForInstance(pp_instance());
-  return PP_OK;
+#endif
+  return PP_ERROR_FAILED;
 }
diff --git a/chrome/renderer/pepper/pepper_helper.h b/chrome/renderer/pepper/pepper_helper.h
index e021c964da3d467530775164a67d5cadaf6dc741..e035f0fb9e2baa6a9148b43765b09c52bc45599b 100644
--- a/chrome/renderer/pepper/pepper_helper.h
+++ b/chrome/renderer/pepper/pepper_helper.h
@@ -6,12 +6,14 @@
 #define CHROME_RENDERER_PEPPER_PEPPER_HELPER_H_
 
 #include "base/compiler_specific.h"
+#include "base/component_export.h"
 #include "base/macros.h"
 #include "content/public/renderer/render_frame_observer.h"
 
 // This class listens for Pepper creation events from the RenderFrame and
 // attaches the parts required for Chrome-specific plugin support.
-class PepperHelper : public content::RenderFrameObserver {
+class COMPONENT_EXPORT(PEPPER_FLASH) PepperHelper
+    : public content::RenderFrameObserver {
  public:
   explicit PepperHelper(content::RenderFrame* render_frame);
   ~PepperHelper() override;