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 130fb82767d534988c51b4e60244f7c73b3ba770..88d8676fe67a61dfe4c3bfad0a94225d4cae81d3 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -799,6 +799,10 @@ 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_->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 286e3d89a6c241b1243908db4b26b66726e197e8..1d617f9c0be6ec770c778d6749ecceb53cac2821 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -1009,6 +1009,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // Requests a commit and forced redraw in the renderer compositor.
   void ForceRedrawForTesting();
 
+  // Electron: Prevents the widget from getting hidden.
+  bool disable_hidden_ = false;
+
  protected:
   // |routing_id| must not be MSG_ROUTING_NONE.
   // 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 612d67d06d766d7ff2f923175c65f24480b87f42..c25e9ec643e715f4545f44ca1ed827b5a6cf7d96 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -643,7 +643,7 @@ void RenderWidgetHostViewAura::HideImpl() {
   CHECK(visibility_ == Visibility::HIDDEN ||
         visibility_ == Visibility::OCCLUDED);
 
-  if (!host()->is_hidden()) {
+  if (!host()->is_hidden() && !host()->disable_hidden_) {
     host()->WasHidden();
     aura::WindowTreeHost* host = window_->GetHost();
       aura::Window* parent = window_->parent();