[android] Resize the android_webview if it's 0x0 initially.

android_webview/browser/browser_view_renderer_impl.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_IMPL_H_
 #define ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_IMPL_H_
 
 #include "android_webview/browser/browser_view_renderer.h"
 #include "android_webview/browser/renderer_host/view_renderer_host.h"
 #include "content/public/browser/android/compositor.h"
@@ skipping 48 matching lines @@
   virtual void OnDetachedFromWindow() OVERRIDE;
   virtual bool IsAttachedToWindow() OVERRIDE;
   virtual bool IsViewVisible() OVERRIDE;
   virtual gfx::Rect GetScreenRect() OVERRIDE;
 
   // content::Compositor::Client implementation.
   virtual void ScheduleComposite() OVERRIDE;
 
   // ViewRendererHost::Client implementation.
   virtual void OnPictureUpdated(int process_id, int render_view_id) OVERRIDE;
+  virtual void OnPageScaleFactorChanged(int process_id,
+                                        int render_view_id,
+                                        float page_scale_factor) OVERRIDE;
 
  protected:
   BrowserViewRendererImpl(BrowserViewRenderer::Client* client,
                           JavaHelper* java_helper);
 
  private:
   class UserData;
   friend class UserData;
 
   // Returns the latest locally available picture if any.
@@ skipping 53 matching lines @@
 
   // Used to observe frame metadata updates.
   content::ContentViewCore::UpdateFrameInfoCallback update_frame_info_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserViewRendererImpl);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_IMPL_H_