Introduce facade for interaction with Android SurfaceTexture.

ui/android/java/src/org/chromium/ui/gfx/SurfaceTextureListener.java

 // 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.
 
 package org.chromium.ui.gfx;
 
 import android.graphics.SurfaceTexture;
 
-import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 
 /**
  * Listener to an android SurfaceTexture object for frame availability.
  */
 @JNINamespace("gfx")
 class SurfaceTextureListener implements SurfaceTexture.OnFrameAvailableListener {
     // Used to determine the class instance to dispatch the native call to.
-    private int mNativeSurfaceTextureListener = 0;
+    private final int mNativeSurfaceTextureListener;
 
-    private SurfaceTextureListener(int nativeSurfaceTextureListener) {
+    SurfaceTextureListener(int nativeSurfaceTextureListener) {
         assert nativeSurfaceTextureListener != 0;
         mNativeSurfaceTextureListener = nativeSurfaceTextureListener;
     }
 
     @Override
     public void onFrameAvailable(SurfaceTexture surfaceTexture) {
         nativeFrameAvailable(mNativeSurfaceTextureListener);
     }
 
     @Override
     protected void finalize() throws Throwable {
         try {
             nativeDestroy(mNativeSurfaceTextureListener);
         } finally {
             super.finalize();
         }
     }
 
-    @CalledByNative
-    private static SurfaceTextureListener create(int nativeSurfaceTextureListener) {
-        return new SurfaceTextureListener(nativeSurfaceTextureListener);
-    }
-
     private native void nativeFrameAvailable(int nativeSurfaceTextureListener);
     private native void nativeDestroy(int nativeSurfaceTextureListener);
 }