fix: backgroundThrottling rwh assignment

patches/chromium/.patches

@@ -87,3 +87,4 @@ chore_use_electron_resources_not_chrome_for_spellchecker.patch
 fix_add_missing_include_algorithm_as_needed.patch
 add_trustedauthclient_to_urlloaderfactory.patch
 fix_focusowningwebcontents_to_handle_renderwidgethosts_for_oopifs.patch
+feat_allow_disbaling_blink_scheduler_throttling_per_renderview.patch

patches/chromium/feat_allow_disbaling_blink_scheduler_throttling_per_renderview.patch

@@ -0,0 +1,155 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: deepak1556 <hop2deep@gmail.com>
+Date: Fri, 29 Nov 2019 16:08:14 -0800
+Subject: feat: allow disabling blink scheduler throttling per RenderView
+
+
+diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
+index 47ef3deb0e645c4d173902051ed7bb2d5b7dcf3e..8b322d50a7873113110b32b8d21707ae36458a4c 100644
+--- a/content/browser/renderer_host/render_view_host_impl.cc
++++ b/content/browser/renderer_host/render_view_host_impl.cc
+@@ -431,6 +431,10 @@ void RenderViewHostImpl::SetBackgroundOpaque(bool opaque) {
+   Send(new ViewMsg_SetBackgroundOpaque(GetRoutingID(), opaque));
+ }
+
++void RenderViewHostImpl::SetSchedulerThrottling(bool allowed) {
++  Send(new ViewMsg_SetSchedulerThrottling(GetRoutingID(), allowed));
++}
++
+ bool RenderViewHostImpl::IsMainFrameActive() {
+   return is_active();
+ }
+diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
+index 5d18be58585804db41eee98f65b527ed89bbfee2..62e6fe1d025b17fb8924b8a01905b50925a148b2 100644
+--- a/content/browser/renderer_host/render_view_host_impl.h
++++ b/content/browser/renderer_host/render_view_host_impl.h
+@@ -104,6 +104,7 @@ class CONTENT_EXPORT RenderViewHostImpl
+   void NotifyMoveOrResizeStarted() override;
+   void SetWebUIProperty(const std::string& name,
+                         const std::string& value) override;
++  void SetSchedulerThrottling(bool allowed) override;
+   WebPreferences GetWebkitPreferences() override;
+   void UpdateWebkitPreferences(const WebPreferences& prefs) override;
+   void OnWebkitPreferencesChanged() override;
+diff --git a/content/common/view_messages.h b/content/common/view_messages.h
+index ef396103f614a16dc1137061db939ea8f8f1ee42..ebd616daee663c1e54de209fcbaa0791ed6e7abe 100644
+--- a/content/common/view_messages.h
++++ b/content/common/view_messages.h
+@@ -115,6 +115,9 @@ IPC_STRUCT_TRAITS_END()
+ // Make the RenderWidget background transparent or opaque.
+ IPC_MESSAGE_ROUTED1(ViewMsg_SetBackgroundOpaque, bool /* opaque */)
+
++// Whether to enable the Renderer scheduler background throttling.
++IPC_MESSAGE_ROUTED1(ViewMsg_SetSchedulerThrottling, bool /* allowed */)
++
+ // This passes a set of webkit preferences down to the renderer.
+ IPC_MESSAGE_ROUTED1(ViewMsg_UpdateWebPreferences,
+                     content::WebPreferences)
+diff --git a/content/public/browser/render_view_host.h b/content/public/browser/render_view_host.h
+index a0c210b5df52598ce9bcc810d776b86cffac837c..0edc8e6f48c39c4dcc2bb3ce64363c722910a286 100644
+--- a/content/public/browser/render_view_host.h
++++ b/content/public/browser/render_view_host.h
+@@ -104,6 +104,9 @@ class CONTENT_EXPORT RenderViewHost : public IPC::Sender {
+   virtual void SetWebUIProperty(const std::string& name,
+                                 const std::string& value) = 0;
+
++  // Disable/Enable scheduler throttling.
++  virtual void SetSchedulerThrottling(bool allowed) = 0;
++
+   // TODO(mustaq): Replace "Webkit" from the following three method names.
+   //
+   // Returns the current WebKit preferences. Note: WebPreferences is cached, so
+diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
+index e31eca37ea538c1c26fe6be636d2b0372792653b..5e35cfc73a785bb2021eefa3c5b3bd4550bdcbad 100644
+--- a/content/renderer/render_view_impl.cc
++++ b/content/renderer/render_view_impl.cc
+@@ -1256,6 +1256,8 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
+   IPC_BEGIN_MESSAGE_MAP(RenderViewImpl, message)
+     IPC_MESSAGE_HANDLER(ViewMsg_SetPageScale, OnSetPageScale)
+     IPC_MESSAGE_HANDLER(ViewMsg_SetInitialFocus, OnSetInitialFocus)
++    IPC_MESSAGE_HANDLER(ViewMsg_SetSchedulerThrottling,
++                        OnSetSchedulerThrottling)
+     IPC_MESSAGE_HANDLER(ViewMsg_UpdateTargetURL_ACK, OnUpdateTargetURLAck)
+     IPC_MESSAGE_HANDLER(ViewMsg_UpdateWebPreferences, OnUpdateWebPreferences)
+     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
+@@ -1857,6 +1859,12 @@ void RenderViewImpl::OnSetPageScale(float page_scale_factor) {
+   webview()->SetPageScaleFactor(page_scale_factor);
+ }
+
++void RenderViewImpl::OnSetSchedulerThrottling(bool allowed) {
++  if (!webview())
++    return;
++  webview()->SetSchedulerThrottling(allowed);
++}
++
+ void RenderViewImpl::ApplyPageHidden(bool hidden, bool initial_setting) {
+   webview()->SetIsHidden(hidden, initial_setting);
+   // Note: RenderWidget visibility is separately set from the IPC handlers, and
+diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
+index 0907c4cdc11b3c775e8856672c397388fa12d91f..bcab94fdd5079e459dcf4e906b22acdbac003dd9 100644
+--- a/content/renderer/render_view_impl.h
++++ b/content/renderer/render_view_impl.h
+@@ -451,6 +451,7 @@ class CONTENT_EXPORT RenderViewImpl : public blink::WebViewClient,
+   void OnSetRendererPrefs(
+       const blink::mojom::RendererPreferences& renderer_prefs);
+   void OnSetWebUIProperty(const std::string& name, const std::string& value);
++  void OnSetSchedulerThrottling(bool allowed);
+   void OnSuppressDialogsUntilSwapOut();
+   void OnUpdateTargetURLAck();
+   void OnUpdateWebPreferences(const WebPreferences& prefs);
+diff --git a/third_party/blink/public/web/web_view.h b/third_party/blink/public/web/web_view.h
+index bd279e31c8bbaa1d9e0f97155f912ac9501fee6c..30b1634775e6f8c9ae4e771a7d8394de06b68a61 100644
+--- a/third_party/blink/public/web/web_view.h
++++ b/third_party/blink/public/web/web_view.h
+@@ -402,6 +402,7 @@ class WebView {
+   // Scheduling -----------------------------------------------------------
+
+   virtual PageScheduler* Scheduler() const = 0;
++  virtual void SetSchedulerThrottling(bool allowed) = 0;
+
+   // Visibility -----------------------------------------------------------
+
+diff --git a/third_party/blink/renderer/core/exported/web_view_impl.cc b/third_party/blink/renderer/core/exported/web_view_impl.cc
+index 367c9d35d41511c344b9f52cbaa506188b3b5490..a1bb786b58eff06915d8a1af2c2e852dcc3b19cc 100644
+--- a/third_party/blink/renderer/core/exported/web_view_impl.cc
++++ b/third_party/blink/renderer/core/exported/web_view_impl.cc
+@@ -3370,10 +3370,17 @@ PageScheduler* WebViewImpl::Scheduler() const {
+   return GetPage()->GetPageScheduler();
+ }
+
++void WebViewImpl::SetSchedulerThrottling(bool allowed) {
++  DCHECK(GetPage());
++  scheduler_throttling_allowed_ = allowed;
++  GetPage()->GetPageScheduler()->SetPageVisible(allowed ? !IsHidden() : true);
++}
++
+ void WebViewImpl::SetIsHidden(bool hidden, bool is_initial_state) {
+   DCHECK(GetPage());
+   GetPage()->SetIsHidden(hidden, is_initial_state);
+-  GetPage()->GetPageScheduler()->SetPageVisible(!hidden);
++  GetPage()->GetPageScheduler()->SetPageVisible(
++      scheduler_throttling_allowed_ ? !hidden : true);
+ }
+
+ bool WebViewImpl::IsHidden() {
+diff --git a/third_party/blink/renderer/core/exported/web_view_impl.h b/third_party/blink/renderer/core/exported/web_view_impl.h
+index a4a5046c8c7e0c50d4a0e6a19ad1ae6d5e098d06..a04587c8c8405024483a377e07fb3f4ede45ff8a 100644
+--- a/third_party/blink/renderer/core/exported/web_view_impl.h
++++ b/third_party/blink/renderer/core/exported/web_view_impl.h
+@@ -309,6 +309,7 @@ class CORE_EXPORT WebViewImpl final : public WebView,
+   LocalDOMWindow* PagePopupWindow() const;
+
+   PageScheduler* Scheduler() const override;
++  void SetSchedulerThrottling(bool allowed) override;
+   void SetIsHidden(bool hidden, bool is_initial_state) override;
+   bool IsHidden() override;
+
+@@ -683,6 +684,8 @@ class CORE_EXPORT WebViewImpl final : public WebView,
+   // WebViewImpl::Close while handling an input event.
+   bool debug_inside_input_handling_ = false;
+
++  bool scheduler_throttling_allowed_ = true;
++
+   FloatSize elastic_overscroll_;
+
+   Persistent<EventListener> popup_mouse_wheel_event_listener_;

shell/browser/api/atom_api_web_contents.cc

@@ -867,10 +867,20 @@ void WebContents::BeforeUnloadFired(bool proceed,
 }
 
 void WebContents::RenderViewCreated(content::RenderViewHost* render_view_host) {
-  auto* impl = static_cast<content::RenderWidgetHostImpl*>(
-      render_view_host->GetWidget());
-  if (impl)
-    impl->disable_hidden_ = !background_throttling_;
+  if (!background_throttling_)
+    render_view_host->SetSchedulerThrottling(false);
+}
+
+void WebContents::RenderFrameCreated(
+    content::RenderFrameHost* render_frame_host) {
+  auto* rwhv = render_frame_host->GetView();
+  if (!rwhv)
+    return;
+
+  auto* rwh_impl =
+      static_cast<content::RenderWidgetHostImpl*>(rwhv->GetRenderWidgetHost());
+  if (rwh_impl)
+    rwh_impl->disable_hidden_ = !background_throttling_;
 }
 
 void WebContents::RenderViewHostChanged(content::RenderViewHost* old_host,
@@ -1290,31 +1300,24 @@ void WebContents::NavigationEntryCommitted(
 void WebContents::SetBackgroundThrottling(bool allowed) {
   background_throttling_ = allowed;
 
-  auto* contents = web_contents();
-  if (!contents) {
+  auto* rfh = web_contents()->GetMainFrame();
+  if (!rfh)
     return;
-  }
 
-  auto* render_view_host = contents->GetRenderViewHost();
-  if (!render_view_host) {
+  auto* rwhv = rfh->GetView();
+  if (!rwhv)
     return;
-  }
 
-  auto* render_process_host = render_view_host->GetProcess();
-  if (!render_process_host) {
+  auto* rwh_impl =
+      static_cast<content::RenderWidgetHostImpl*>(rwhv->GetRenderWidgetHost());
+  if (!rwh_impl)
     return;
-  }
-
-  auto* render_widget_host_impl = content::RenderWidgetHostImpl::FromID(
-      render_process_host->GetID(), render_view_host->GetRoutingID());
-  if (!render_widget_host_impl) {
-    return;
-  }
 
-  render_widget_host_impl->disable_hidden_ = !background_throttling_;
+  rwh_impl->disable_hidden_ = !background_throttling_;
+  web_contents()->GetRenderViewHost()->SetSchedulerThrottling(allowed);
 
-  if (render_widget_host_impl->is_hidden()) {
-    render_widget_host_impl->WasShown(base::nullopt);
+  if (rwh_impl->is_hidden()) {
+    rwh_impl->WasShown(base::nullopt);
   }
 }
 

shell/browser/api/atom_api_web_contents.h

@@ -422,7 +422,8 @@ class WebContents : public mate::TrackableObject<WebContents>,
   // content::WebContentsObserver:
   void BeforeUnloadFired(bool proceed,
                          const base::TimeTicks& proceed_time) override;
-  void RenderViewCreated(content::RenderViewHost*) override;
+  void RenderViewCreated(content::RenderViewHost* render_view_host) override;
+  void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
   void RenderViewHostChanged(content::RenderViewHost* old_host,
                              content::RenderViewHost* new_host) override;
   void RenderViewDeleted(content::RenderViewHost*) override;