cc: Adding support for RGBA_4444 tile textures

cc/resources/resource_provider.h

 // Copyright 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.
 
 #ifndef CC_RESOURCES_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 314 matching lines @@
   bool CanLockForWrite(ResourceId id);
 
   cc::ContextProvider* offscreen_context_provider() {
     return offscreen_context_provider_.get();
   }
   void set_offscreen_context_provider(
       scoped_refptr<cc::ContextProvider> offscreen_context_provider) {
     offscreen_context_provider_ = offscreen_context_provider;
   }
   static GLint GetActiveTextureUnit(WebKit::WebGraphicsContext3D* context);
+  bool use_16bit_textures() { return use_16bit_textures_; }
 
  private:
   struct Resource {
     Resource();
     ~Resource();
     Resource(unsigned texture_id,
              gfx::Size size,
              GLenum format,
              GLenum filter,
              GLenum texture_pool,
@@ skipping 91 matching lines @@
   scoped_ptr<TextureUploader> texture_uploader_;
   int max_texture_size_;
   GLenum best_texture_format_;
 
   scoped_refptr<cc::ContextProvider> offscreen_context_provider_;
 
   base::ThreadChecker thread_checker_;
 
   scoped_refptr<Fence> current_read_lock_fence_;
 
+  bool use_16bit_textures_;
+
   DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_