Introduce CompositorDependencies for RenderWidgetCompositor.

content/renderer/gpu/compositor_dependencies.h

+// Copyright 2014 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 CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_
+#define CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace cc {
+class BeginFrameSource;
+class ContextProvider;
+class SharedBitmapManager;
+}
+
+namespace gpu {
+class GpuMemoryBufferManager;
+}
+
+namespace content {
+class RendererScheduler;
+
+class CompositorDependencies {
+ public:
+  virtual bool IsImplSidePaintingEnabled() = 0;
+  virtual bool IsGpuRasterizationForced() = 0;
+  virtual bool IsGpuRasterizationEnabled() = 0;
+  virtual bool IsLcdTextEnabled() = 0;
+  virtual bool IsDistanceFieldTextEnabled() = 0;
+  virtual bool IsZeroCopyEnabled() = 0;
+  virtual bool IsOneCopyEnabled() = 0;
+  virtual uint32 GetImageTextureTarget() = 0;
+  virtual scoped_refptr<base::SingleThreadTaskRunner>
+  GetCompositorMainThreadTaskRunner() = 0;
+  // Returns null if the compositor is in single-threaded mode (ie. there is no
+  // compositor thread).
+  virtual scoped_refptr<base::SingleThreadTaskRunner>
+  GetCompositorImplThreadTaskRunner() = 0;
+  virtual cc::SharedBitmapManager* GetSharedBitmapManager() = 0;
+  virtual gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;
+  virtual RendererScheduler* GetRendererScheduler() = 0;
+  virtual cc::ContextProvider* GetSharedMainThreadContextProvider() = 0;
+  virtual scoped_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
+      int routing_id) = 0;
+
+  virtual ~CompositorDependencies() {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_