Mac Overlays: Allow SolidColor and Tile quads to be candidates for overlays.

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 293 matching lines @@
 
    private:
     ResourceProvider* resource_provider_;
     ResourceProvider::Resource* resource_;
     SkBitmap sk_bitmap_;
     base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockSoftware);
   };
 
+  class CC_EXPORT ScopedReadLockGpuMemoryBuffer {
+   public:
+    ScopedReadLockGpuMemoryBuffer(ResourceProvider* resource_provider,
+                                  ResourceId resource_id);
+    ~ScopedReadLockGpuMemoryBuffer();
+
+    unsigned image_id() const { return image_id_; }
+
+   private:
+    ResourceProvider* resource_provider_;
+    ResourceId resource_id_;
+    unsigned image_id_;
+
+    DISALLOW_COPY_AND_ASSIGN(ScopedReadLockGpuMemoryBuffer);
+  };
+
   class CC_EXPORT ScopedWriteLockGpuMemoryBuffer {
    public:
     ScopedWriteLockGpuMemoryBuffer(ResourceProvider* resource_provider,
                                    ResourceId resource_id);
     ~ScopedWriteLockGpuMemoryBuffer();
 
     gfx::GpuMemoryBuffer* GetGpuMemoryBuffer();
 
    private:
     ResourceProvider* resource_provider_;
@@ skipping 278 matching lines @@
   // A process-unique ID used for disambiguating memory dumps from different
   // resource providers.
   int tracing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_