cc: Refactor ResourceProvider.

cc/resources/scoped_gpu_raster.h

Index: cc/resources/scoped_gpu_raster.h
diff --git a/cc/resources/scoped_gpu_raster.h b/cc/resources/scoped_gpu_raster.h
new file mode 100644
index 0000000000000000000000000000000000000000..182c67d173280a6ca502c61ebbdf52e283bfe8bd
--- /dev/null
+++ b/cc/resources/scoped_gpu_raster.h
@@ -0,0 +1,34 @@
+// Copyright 2013 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_SCOPED_GPU_RASTER_H_
+#define CC_RESOURCES_SCOPED_GPU_RASTER_H_
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/base/cc_export.h"
+#include "cc/output/context_provider.h"
+
+namespace cc {
+
+// The following class is needed to modify GL resources using GPU
+// raster. The user must ensure that they only use GPU raster on
+// GL resources while an instance of this class is alive.
+class CC_EXPORT ScopedGpuRaster {
+ public:
+  ScopedGpuRaster(ContextProvider* context_provider);
+  ~ScopedGpuRaster();
+
+ private:
+  void BeginGpuRaster();
+  void EndGpuRaster();
+
+  ContextProvider* context_provider_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedGpuRaster);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_SCOPED_GPU_RASTER_H_