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 307 matching lines @@
   }
   Fence* GetReadLockFence() { return current_read_lock_fence_.get(); }
 
   // Enable read lock fences for a specific resource.
   void EnableReadLockFences(ResourceProvider::ResourceId id, bool enable);
 
   // Indicates if we can currently lock this resource for write.
   bool CanLockForWrite(ResourceId id);
 
   static GLint GetActiveTextureUnit(WebKit::WebGraphicsContext3D* context);
+  bool use_16_bit_textures() { return use_16_bit_textures_; }
 
  private:
   struct Resource {
     Resource();
     ~Resource();
     Resource(unsigned texture_id,
              gfx::Size size,
              GLenum format,
              GLenum filter,
              GLenum texture_pool,
@@ skipping 94 matching lines @@
   bool use_texture_usage_hint_;
   bool use_shallow_flush_;
   scoped_ptr<TextureUploader> texture_uploader_;
   int max_texture_size_;
   GLenum best_texture_format_;
 
   base::ThreadChecker thread_checker_;
 
   scoped_refptr<Fence> current_read_lock_fence_;
 
+  bool use_16_bit_textures_;
+
   DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_