gfx: Create a separate gfx component out of ui.

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

 // 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.
 
 package org.chromium.ui.gfx;
 
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 
-@JNINamespace("ui")
+@JNINamespace("gfx")
 public class BitmapHelper {
     @CalledByNative
     public static Bitmap createBitmap(int width, int height) {
         return Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
     }
 
     /**
      * Decode and sample down a bitmap resource to the requested width and height.
      *
      * @param name The resource name of the bitmap to decode.
@@ skipping 36 matching lines @@
 
             // Choose the smallest ratio as inSampleSize value, this will guarantee
             // a final image with both dimensions larger than or equal to the
             // requested height and width.
             inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
         }
 
         return inSampleSize;
     }
 }