ResourceScheduler get visual signal from RenderViewHostImpl

content/browser/renderer_host/render_view_host_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 303 matching lines @@
                         uint64 upload_size);
 
   bool SuddenTerminationAllowed() const;
   void set_sudden_termination_allowed(bool enabled) {
     sudden_termination_allowed_ = enabled;
   }
 
   // RenderWidgetHost public overrides.
   virtual void Init() OVERRIDE;
   virtual void Shutdown() OVERRIDE;
+  virtual void WasHidden() OVERRIDE;
+  virtual void WasShown(const ui::LatencyInfo& latency_info) OVERRIDE;
   virtual bool IsRenderView() const OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
   virtual void GotFocus() OVERRIDE;
   virtual void LostCapture() OVERRIDE;
   virtual void LostMouseLock() OVERRIDE;
   virtual void ForwardMouseEvent(
       const blink::WebMouseEvent& mouse_event) OVERRIDE;
   virtual void OnPointerEventActivate() OVERRIDE;
   virtual void ForwardKeyboardEvent(
       const NativeWebKeyboardEvent& key_event) OVERRIDE;
@@ skipping 236 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_