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

android_webview/renderer/aw_render_view_ext.h

Index: android_webview/renderer/aw_render_view_ext.h
diff --git a/android_webview/renderer/aw_render_view_ext.h b/android_webview/renderer/aw_render_view_ext.h
index 26daff887e5c6d0c659dad8c3931d651413dc135..0a336bb718ce3d29147ddf3f2d51ee6e5d42ab80 100644
--- a/android_webview/renderer/aw_render_view_ext.h
+++ b/android_webview/renderer/aw_render_view_ext.h
@@ -36,6 +36,7 @@ class AwRenderViewExt : public content::RenderViewObserver,
   virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
                                         bool is_new_navigation) OVERRIDE;
   virtual void FocusedNodeChanged(const WebKit::WebNode& node) OVERRIDE;
+  virtual void DidCommitCompositorFrame() OVERRIDE;
 
   void OnDocumentHasImagesRequest(int id);
 
@@ -49,6 +50,8 @@ class AwRenderViewExt : public content::RenderViewObserver,
 
   void OnSetInitialPageScale(double page_scale_factor);
 
+  void UpdatePageScaleFactor();
+
   // WebKit::WebPermissionClient implementation.
   virtual bool allowImage(WebKit::WebFrame* frame,
                           bool enabledPerSettings,
@@ -56,6 +59,8 @@ class AwRenderViewExt : public content::RenderViewObserver,
 
   bool capture_picture_enabled_;
 
+  float page_scale_factor_;
+
   DISALLOW_COPY_AND_ASSIGN(AwRenderViewExt);
 };