cc: Fix incomplete changes to add ETC1 support

cc/resources/etc1_pixel_ref.h

+// Copyright 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.
+
+#ifndef CC_RESOURCES_ETC1_PIXEL_REF_H_
+#define CC_RESOURCES_ETC1_PIXEL_REF_H_
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkPixelRef.h"
+
+namespace cc {
+
+class ETC1PixelRef : public SkPixelRef {
+ public:
+  // Takes ownership of pixels.
+  explicit ETC1PixelRef(scoped_ptr<uint8_t[]> pixels);

[aelias_OOO_until_Jul13, 2013/11/07 19:30:27]

Could you also make this take a gfx::Size in the constructor and store it?

[powei, 2013/11/07 19:45:31]

Then both UIResourceBitmap and this class will hold a gfx::Size?  Also, seems
like Skia subclasses of SkPixelRef typically do not store the size.  Maybe we
need another wrapper class (ETC1Bitmap) like how SkBitmap wraps around
SkPixelRef?

+  virtual ~ETC1PixelRef() {}
+  SK_DECLARE_UNFLATTENABLE_OBJECT()
+
+ protected:
+  // Implementation of SkPixelRef.
+  virtual void* onLockPixels(SkColorTable** color_table) SK_OVERRIDE;
+  virtual void onUnlockPixels() SK_OVERRIDE {}
+
+ private:
+  scoped_ptr<uint8_t[]> pixels_;
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_ETC1_PIXEL_REF_H_