Support impl-side painting in Mandoline.

components/view_manager/gles2/raster_thread_helper.h

+// Copyright 2015 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 COMPONENTS_VIEW_MANAGER_GLES2_RASTER_THREAD_HELPER_H_
+#define COMPONENTS_VIEW_MANAGER_GLES2_RASTER_THREAD_HELPER_H_
+
+#include "base/memory/scoped_ptr.h"
+
+namespace cc {
+class TaskGraphRunner;
+}
+
+namespace gles2 {
+
+class RasterThreadHelper {
+ public:
+  RasterThreadHelper();
+  ~RasterThreadHelper();
+
+  cc::TaskGraphRunner* task_graph_runner() { return task_graph_runner_.get(); }
+
+ private:
+  class RasterThread;
+
+  scoped_ptr<cc::TaskGraphRunner> task_graph_runner_;
+  scoped_ptr<RasterThread> raster_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(RasterThreadHelper);
+};
+
+}  // namespace gles2
+
+#endif  // COMPONENTS_VIEW_MANAGER_GLES2_RASTER_THREAD_HELPER_H_