cc: Adding support for RGBA_4444 tile textures

ui/gfx/android/java_bitmap.cc

 // 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.
 
 #include "ui/gfx/android/java_bitmap.h"
 
 #include <android/bitmap.h>
 
+#include "base/android/sys_utils.h"
 #include "base/logging.h"
 #include "jni/BitmapHelper_jni.h"
 #include "skia/ext/image_operations.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/size.h"
 
 using base::android::AttachCurrentThread;
 
 namespace gfx {
 
@@ skipping 65 matching lines @@
   skbitmap.setConfig(SkBitmap::kARGB_8888_Config,
       src_size.width(), src_size.height(), src_lock.stride());
   skbitmap.allocPixels();
   SkAutoLockPixels dst_lock(skbitmap);
 
   void* src_pixels = src_lock.pixels();
   void* dst_pixels = skbitmap.getPixels();
 
   memcpy(dst_pixels, src_pixels, skbitmap.getSize());
 
+  if (base::android::SysUtils::IsLowEndDevice()) {

[Sami, 2013/09/05 14:13:26]

Is this mainly for UI resources? You could consider landing this change
separately since it's not really connected to the compositor changes.

[kaanb, 2013/09/06 02:05:54]

Done.

+    SkBitmap bitmap_16;
+    skbitmap.copyTo(&bitmap_16, SkBitmap::kARGB_4444_Config);
+    return bitmap_16;
+  }
+
   return skbitmap;
 }
 
 SkBitmap CreateSkBitmapFromResource(const char* name, gfx::Size size) {
   DCHECK(!size.IsEmpty());
   SkBitmap bitmap =
       ConvertToSkBitmap(CreateJavaBitmapFromResource(name, size));
   if (bitmap.isNull())
     return bitmap;
   // RESIZE_BOX has sufficient downsampling quality with minimal runtime cost.
   return skia::ImageOperations::Resize(bitmap,

[Sami, 2013/09/05 14:13:26]

Should we do 16 bit here too?

[kaanb, 2013/09/06 02:05:54]

Removed this file from the patch since the overscroll glow is working now.

                                        skia::ImageOperations::RESIZE_BOX,
                                        size.width(), size.height());
 }
 
 }  //  namespace gfx