Remove android_webview/browser layer's dependency on native

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"
 #include "base/cancelable_callback.h"
 #include "base/trace_event/trace_event.h"
 #include "content/public/browser/android/synchronous_compositor.h"
 #include "content/public/browser/android/synchronous_compositor_client.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/vector2d_f.h"
 
 class SkCanvas;
 class SkPicture;
 
+namespace content {
+class WebContents;
+}
+
 namespace android_webview {
 
 class BrowserViewRendererClient;
 
 // 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);
 
   ~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.
   // |global_visible_rect| is the intersection of the view size and the window
   // in window coordinates.
   void PrepareToDraw(const gfx::Vector2d& scroll,
                      const gfx::Rect& global_visible_rect);
 
@@ skipping 145 matching lines @@
   // visible skew (especially noticeable when scrolling up and down in the same
   // spot over a period of time).
   gfx::Vector2dF overscroll_rounding_error_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserViewRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_