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

android_webview/native/aw_contents.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 ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 
 #include <jni.h>
 #include <list>
 #include <string>
@@ skipping 126 matching lines @@
   // IconHelper::Listener implementation.
   virtual void OnReceivedIcon(const SkBitmap& bitmap) OVERRIDE;
   virtual void OnReceivedTouchIconUrl(const std::string& url,
                                       const bool precomposed) OVERRIDE;
 
   // BrowserViewRenderer::Client implementation.
   virtual void Invalidate() OVERRIDE;
   virtual void OnNewPicture(
       const base::android::JavaRef<jobject>& picture) OVERRIDE;
   virtual gfx::Point GetLocationOnScreen() OVERRIDE;
+  virtual void OnPageScaleFactorChanged(float page_scale_factor) OVERRIDE;
 
   void ClearCache(JNIEnv* env, jobject obj, jboolean include_disk_files);
   void SetPendingWebContentsForPopup(scoped_ptr<content::WebContents> pending);
   jint ReleasePopupWebContents(JNIEnv* env, jobject obj);
 
  private:
   void SetWebContents(content::WebContents* web_contents);
 
   JavaObjectWeakGlobalRef java_ref_;
   scoped_ptr<content::WebContents> web_contents_;
@@ skipping 13 matching lines @@
   std::list<OriginCallback> pending_geolocation_prompts_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContents);
 };
 
 bool RegisterAwContents(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_