cc: Changes to use GL API for GpuMemoryBuffers

cc/resources/resource_provider.h

Index: cc/resources/resource_provider.h
diff --git a/cc/resources/resource_provider.h b/cc/resources/resource_provider.h
index 6f146d916ba64aa3a9cde12c015fece97e6b66a4..f683a89570af22aaaa29a71fe7c01901abf6637c 100644
--- a/cc/resources/resource_provider.h
+++ b/cc/resources/resource_provider.h
@@ -292,6 +292,14 @@ class CC_EXPORT ResourceProvider {
   bool DidSetPixelsComplete(ResourceId id);
   void AbortSetPixels(ResourceId id);
 
+  // Methods for GLImage zero-copy API.

[reveman, 2013/05/20 23:16:01]

I think these functions could need a bit more of a description. Can you split
them up like the pixel buffer functions above and add a line or to describing
what they do? Btw, the GLImage name is an implementation detail, please avoid
using it here.

[kaanb, 2013/05/21 00:52:29]

Done.

+  void AcquireImage(ResourceId id);
+  void ReleaseImage(ResourceId id);
+  uint8_t* MapImage(ResourceId id);
+  void UnmapImage(ResourceId id);
+  void BindImage(ResourceId id);
+  int GetImageStride(ResourceId id);
+
   // For tests only! This prevents detecting uninitialized reads.
   // Use SetPixels or LockForWrite to allocate implicitly.
   void AllocateForTesting(ResourceId id);
@@ -347,6 +355,7 @@ class CC_EXPORT ResourceProvider {
     GLenum format;
     // TODO(skyostil): Use a separate sampler object for filter state.
     GLenum filter;
+    unsigned image_id;
     ResourceType type;
   };
   typedef base::hash_map<ResourceId, Resource> ResourceMap;