cc: Adding support for RGBA_4444 tile textures

cc/resources/resource_pool.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_POOL_H_
 #define CC_RESOURCES_RESOURCE_POOL_H_
 
 #include <list>
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/renderer.h"
 #include "cc/resources/resource.h"
 
 namespace cc {
 class ResourceProvider;
 
 class CC_EXPORT ResourcePool {
  public:
   class CC_EXPORT Resource : public cc::Resource {
    public:
     Resource(ResourceProvider* resource_provider,
              gfx::Size size,
-             GLenum format);
+             GLenum format,
+             bool use_16_bit_resource);

[epennerAtGoogle, 2013/09/05 01:54:15]

Can we avoid this boolean in favor of a real format/type? There are many
formats/types that will result in 16 bits.

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

Done.

     ~Resource();
 
    private:
     ResourceProvider* resource_provider_;
 
     DISALLOW_COPY_AND_ASSIGN(Resource);
   };
 
   static scoped_ptr<ResourcePool> Create(ResourceProvider* resource_provider) {
     return make_scoped_ptr(new ResourcePool(resource_provider));
   }
 
   virtual ~ResourcePool();
 
   scoped_ptr<ResourcePool::Resource> AcquireResource(gfx::Size size,
-                                                     GLenum format);
+                                                     GLenum format,
+                                                     bool use_16_bit_resource);
   void ReleaseResource(scoped_ptr<ResourcePool::Resource>);
 
   void SetResourceUsageLimits(size_t max_memory_usage_bytes,
                               size_t max_unused_memory_usage_bytes,
                               size_t max_resource_count);
 
   void ReduceResourceUsage();
 
   size_t total_memory_usage_bytes() const {
     return memory_usage_bytes_;
@@ skipping 21 matching lines @@
 
   typedef std::list<Resource*> ResourceList;
   ResourceList unused_resources_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourcePool);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_POOL_H_