Refactor BrowserViewRenderer to support page visibility

android_webview/browser/browser_view_renderer.h

 // Copyright (c) 2013 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 ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_
 
 #include "android_webview/browser/parent_compositor_draw_constraints.h"
 #include "android_webview/browser/shared_renderer_state.h"
 #include "base/callback.h"
@@ skipping 21 matching lines @@
 // Interface for all the WebView-specific content rendering operations.
 // Provides software and hardware rendering and the Capture Picture API.
 class BrowserViewRenderer : public content::SynchronousCompositorClient {
  public:
   static void CalculateTileMemoryPolicy();
   static BrowserViewRenderer* FromWebContents(
       content::WebContents* web_contents);
 
   BrowserViewRenderer(
       BrowserViewRendererClient* client,
-      const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner);
+      const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner,
+      bool disable_page_visibility);
 
   ~BrowserViewRenderer() override;
 
   void RegisterWithWebContents(content::WebContents* web_contents);
 
   SharedRendererState* GetAwDrawGLViewContext();
   bool RequestDrawGL(bool wait_for_completion);
 
   // Called before either OnDrawHardware or OnDrawSoftware to set the view
   // state of this frame. |scroll| is the view's current scroll offset.
@@ skipping 33 matching lines @@
   void ScrollTo(gfx::Vector2d new_value);
 
   // Android views hierarchy gluing.
   bool IsVisible() const;
   gfx::Rect GetScreenRect() const;
   bool attached_to_window() const { return attached_to_window_; }
   bool hardware_enabled() const { return hardware_enabled_; }
   gfx::Size size() const { return size_; }
   void ReleaseHardware();
 
+  bool IsClientVisible() const;
   void TrimMemory(const int level, const bool visible);
 
   // SynchronousCompositorClient overrides.
   void DidInitializeCompositor(
       content::SynchronousCompositor* compositor) override;
   void DidDestroyCompositor(
       content::SynchronousCompositor* compositor) override;
   void PostInvalidate() override;
   void DidUpdateContent() override;
   void UpdateRootLayerState(const gfx::Vector2dF& total_scroll_offset_dip,
@@ skipping 43 matching lines @@
 
   void UpdateMemoryPolicy();
 
   // For debug tracing or logging. Return the string representation of this
   // view renderer's state.
   std::string ToString() const;
 
   BrowserViewRendererClient* client_;
   SharedRendererState shared_renderer_state_;
   scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
+  bool disable_page_visibility_;
 
   content::SynchronousCompositor* compositor_;
 
   bool is_paused_;
   bool view_visible_;
   bool window_visible_;  // Only applicable if |attached_to_window_| is true.
   bool attached_to_window_;
   bool hardware_enabled_;
   float dip_scale_;
   float page_scale_factor_;
@@ skipping 28 matching lines @@
   // spot over a period of time).
   // TODO(miletus): Make overscroll_rounding_error_ a gfx::ScrollOffset.
   gfx::Vector2dF overscroll_rounding_error_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserViewRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_