refactor: use gin::Wrappable for electron::api::DataPipeHolder (#49495)

* refactor: make `DataPipeHolder` inherit from `gin::Wrappable`

* test: add a test to ensure GC clears the data pipe holder

* chore: e patches all

* chore: e patches all (trivial only)

* refactor: make AllDataPipeHolders a base::flat_map of WeakPersistent

shell/browser/api/electron_api_data_pipe_holder.cc

@@ -7,6 +7,8 @@
 #include <utility>
 #include <vector>
 
+#include "base/containers/flat_map.h"
+#include "base/containers/map_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/no_destructor.h"
 #include "base/strings/string_number_conversions.h"
@@ -14,10 +16,10 @@
 #include "mojo/public/cpp/system/data_pipe.h"
 #include "mojo/public/cpp/system/simple_watcher.h"
 #include "net/base/net_errors.h"
-#include "shell/common/gin_helper/handle.h"
 #include "shell/common/gin_helper/promise.h"
-#include "shell/common/key_weak_map.h"
 #include "shell/common/node_util.h"
+#include "v8/include/cppgc/allocation.h"
+#include "v8/include/v8-cppgc.h"
 
 #include "shell/common/node_includes.h"
 
@@ -29,9 +31,11 @@ namespace {
 int g_next_id = 0;
 
 // Map that manages all the DataPipeHolder objects.
-KeyWeakMap<std::string>& AllDataPipeHolders() {
-  static base::NoDestructor<KeyWeakMap<std::string>> weak_map;
-  return *weak_map.get();
+[[nodiscard]] auto& AllDataPipeHolders() {
+  static base::NoDestructor<
+      base::flat_map<std::string, cppgc::WeakPersistent<DataPipeHolder>>>
+      weak_map;
+  return *weak_map;
 }
 
 // Utility class to read from data pipe.
@@ -143,8 +147,9 @@ class DataPipeReader {
 
 }  // namespace
 
-gin::DeprecatedWrapperInfo DataPipeHolder::kWrapperInfo = {
-    gin::kEmbedderNativeGin};
+const gin::WrapperInfo DataPipeHolder::kWrapperInfo = {
+    {gin::kEmbedderNativeGin},
+    gin::kElectronDataPipeHolder};
 
 DataPipeHolder::DataPipeHolder(const network::DataElement& element)
     : id_(base::NumberToString(++g_next_id)) {
@@ -166,30 +171,28 @@ v8::Local<v8::Promise> DataPipeHolder::ReadAll(v8::Isolate* isolate) {
   return handle;
 }
 
-const char* DataPipeHolder::GetTypeName() {
-  return "DataPipeHolder";
+const gin::WrapperInfo* DataPipeHolder::wrapper_info() const {
+  return &kWrapperInfo;
+}
+
+const char* DataPipeHolder::GetHumanReadableName() const {
+  return "Electron / DataPipeHolder";
 }
 
 // static
-gin_helper::Handle<DataPipeHolder> DataPipeHolder::Create(
-    v8::Isolate* isolate,
-    const network::DataElement& element) {
-  auto handle = gin_helper::CreateHandle(isolate, new DataPipeHolder(element));
-  AllDataPipeHolders().Set(isolate, handle->id(),
-                           handle->GetWrapper(isolate).ToLocalChecked());
-  return handle;
+DataPipeHolder* DataPipeHolder::Create(v8::Isolate* isolate,
+                                       const network::DataElement& element) {
+  auto* holder = cppgc::MakeGarbageCollected<DataPipeHolder>(
+      isolate->GetCppHeap()->GetAllocationHandle(), element);
+  AllDataPipeHolders().insert_or_assign(holder->id(), holder);
+  return holder;
 }
 
 // static
-gin_helper::Handle<DataPipeHolder> DataPipeHolder::From(v8::Isolate* isolate,
-                                                        const std::string& id) {
-  v8::MaybeLocal<v8::Object> object = AllDataPipeHolders().Get(isolate, id);
-  if (!object.IsEmpty()) {
-    gin_helper::Handle<DataPipeHolder> handle;
-    if (gin::ConvertFromV8(isolate, object.ToLocalChecked(), &handle))
-      return handle;
-  }
-  return {};
+DataPipeHolder* DataPipeHolder::From(v8::Isolate* isolate,
+                                     const std::string_view id) {
+  auto* found = base::FindOrNull(AllDataPipeHolders(), id);
+  return found ? found->Get() : nullptr;
 }
 
 }  // namespace electron::api

shell/browser/api/electron_api_data_pipe_holder.h

@@ -7,31 +7,28 @@
 
 #include <string>
 
+#include "gin/wrappable.h"
 #include "mojo/public/cpp/bindings/remote.h"
 #include "services/network/public/cpp/data_element.h"
 #include "services/network/public/mojom/data_pipe_getter.mojom.h"
-#include "shell/common/gin_helper/wrappable.h"
-
-namespace gin_helper {
-template <typename T>
-class Handle;
-}  // namespace gin_helper
 
 namespace electron::api {
 
 // Retains reference to the data pipe.
-class DataPipeHolder final
-    : public gin_helper::DeprecatedWrappable<DataPipeHolder> {
+class DataPipeHolder final : public gin::Wrappable<DataPipeHolder> {
  public:
-  // gin_helper::Wrappable
-  static gin::DeprecatedWrapperInfo kWrapperInfo;
-  const char* GetTypeName() override;
+  // gin::Wrappable
+  static const gin::WrapperInfo kWrapperInfo;
+  const gin::WrapperInfo* wrapper_info() const override;
+  const char* GetHumanReadableName() const override;
 
-  static gin_helper::Handle<DataPipeHolder> Create(
-      v8::Isolate* isolate,
-      const network::DataElement& element);
-  static gin_helper::Handle<DataPipeHolder> From(v8::Isolate* isolate,
-                                                 const std::string& id);
+  static DataPipeHolder* Create(v8::Isolate* isolate,
+                                const network::DataElement& element);
+  static DataPipeHolder* From(v8::Isolate* isolate, std::string_view id);
+
+  // Make public for cppgc::MakeGarbageCollected.
+  explicit DataPipeHolder(const network::DataElement& element);
+  ~DataPipeHolder() override;
 
   // Read all data at once.
   //
@@ -47,9 +44,6 @@ class DataPipeHolder final
   DataPipeHolder& operator=(const DataPipeHolder&) = delete;
 
  private:
-  explicit DataPipeHolder(const network::DataElement& element);
-  ~DataPipeHolder() override;
-
   std::string id_;
   mojo::Remote<network::mojom::DataPipeGetter> data_pipe_;
 };

shell/browser/api/electron_api_session.cc

@@ -1044,15 +1044,13 @@ bool Session::IsPersistent() {
 
 v8::Local<v8::Promise> Session::GetBlobData(v8::Isolate* isolate,
                                             const std::string& uuid) {
-  gin_helper::Handle<DataPipeHolder> holder =
-      DataPipeHolder::From(isolate, uuid);
-  if (holder.IsEmpty()) {
-    gin_helper::Promise<v8::Local<v8::Value>> promise(isolate);
-    promise.RejectWithErrorMessage("Could not get blob data handle");
-    return promise.GetHandle();
+  if (DataPipeHolder* holder = DataPipeHolder::From(isolate, uuid)) {
+    return holder->ReadAll(isolate);
   }
 
-  return holder->ReadAll(isolate);
+  gin_helper::Promise<v8::Local<v8::Value>> promise(isolate);
+  promise.RejectWithErrorMessage("Could not get blob data handle");
+  return promise.GetHandle();
 }
 
 void Session::DownloadURL(const GURL& url, gin::Arguments* args) {