experiments with uiresourcebitmap

cc/resources/ui_resource_bitmap.cc

 // 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.
 
 #include "cc/resources/ui_resource_bitmap.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 63 matching lines @@
   SkAlphaType alphaType = is_opaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
   SkImageInfo info =
       SkImageInfo::MakeN32(size.width(), size.height(), alphaType);
   sk_sp<SkPixelRef> pixel_ref(
       SkMallocPixelRef::MakeAllocate(info, info.minRowBytes(), NULL));
   pixel_ref->setImmutable();
   Create(std::move(pixel_ref), size, UIResourceBitmap::RGBA8);
   SetOpaque(is_opaque);
 }
 
-UIResourceBitmap::UIResourceBitmap(sk_sp<SkPixelRef> pixel_ref,
-                                   const gfx::Size& size) {
-  Create(std::move(pixel_ref), size, UIResourceBitmap::ETC1);
-}
-
 UIResourceBitmap::UIResourceBitmap(const UIResourceBitmap& other) = default;
 
 UIResourceBitmap::~UIResourceBitmap() {}
 }  // namespace cc