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 fb8a955d9efe122057b681e4a8084cb069b1b816..0c5aa1c0e4c344f807cf0fcb7cc3cf532c1eaf23 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -836,6 +836,10 @@ 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 1e5164c3f015711d337f3775eb67381b76126344..062f911a9515285444f9c0abf9220f8d37a68e8f 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -1020,6 +1020,9 @@ 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 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 f4c657fe36eba54948cacf9770d9c6c1b55b5fe5..b14f5bc3f023c512a066ce9ec9f681c96b1fafc4 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -644,7 +644,7 @@ 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();