electron/patches/chromium/disable_hidden.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Thu, 20 Sep 2018 17:45:47 -0700
Subject: disable_hidden.patch

Electron uses this to disable background throttling for hidden windows.

diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 3f70e5c18349575414aae38e2c1c9caf4a494594..081e2ceb505e4bb8104912df139f1f1deefe13d7 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -841,6 +841,10 @@ void RenderWidgetHostImpl::WasHidden() {
     return;
   }
 
+  if (disable_hidden_) {
+    return;
+  }
+
   // Cancel pending pointer lock requests, unless there's an open user prompt.
   // Prompts should remain open and functional across tab switches.
   if (!delegate_ || !delegate_->IsWaitingForPointerLockPrompt(this)) {
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 848a6661dabb64c4eed3bf1d23e1de730918e05f..437e1aadf8d2583050a622b28c391715c131d32a 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -1032,6 +1032,8 @@ class CONTENT_EXPORT RenderWidgetHostImpl
     return synthetic_gesture_controller_.get();
   }
 
+  // Electron: Prevents the widget from getting hidden.
+  bool disable_hidden_ = false;
  protected:
   // |routing_id| must not be IPC::mojom::kRoutingIdNone.
   // If this object outlives |delegate|, DetachDelegate() must be called when
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 63a7dc99a9596f22379436c32325936ebd8d14e6..b4f1a82dc4294313c4439cb132ae05ea8cd19a99 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -697,7 +697,7 @@ void RenderWidgetHostViewAura::HideImpl() {
   CHECK(visibility_ == Visibility::HIDDEN ||
         visibility_ == Visibility::OCCLUDED);
 
-  if (!host()->IsHidden()) {
+  if (!host()->IsHidden() && !host()->disable_hidden_) {
     host()->WasHidden();
     aura::WindowTreeHost* host = window_->GetHost();
       aura::Window* parent = window_->parent();