Surfaceless OutputSurface implementation.

content/browser/compositor/gpu_surfaceless_browser_compositor_output_surface.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_BROWSER_COMPOSITOR_GPU_SURFACELESS_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
+#define CONTENT_BROWSER_COMPOSITOR_GPU_SURFACELESS_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
+
+#include "content/browser/compositor/gpu_browser_compositor_output_surface.h"
+
+namespace content {
+
+class BufferedOutputSurface;
+
+class GpuSurfacelessBrowserCompositorOutputSurface
+    : public GpuBrowserCompositorOutputSurface {
+ public:
+  GpuSurfacelessBrowserCompositorOutputSurface(
+      const scoped_refptr<ContextProviderCommandBuffer>& context,
+      int surface_id,
+      IDMap<BrowserCompositorOutputSurface>* output_surface_map,
+      const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
+      scoped_ptr<cc::OverlayCandidateValidator> overlay_candidate_validator,
+      unsigned internalformat,
+      int z_order);

[alexst (slow to review), 2014/09/10 15:39:07]

Let's leave z order for a followup CL.

+  virtual ~GpuSurfacelessBrowserCompositorOutputSurface();
+
+ private:
+  // cc::OutputSurface implementation.
+  virtual void SwapBuffers(cc::CompositorFrame* frame) OVERRIDE;
+  virtual void OnSwapBuffersComplete() OVERRIDE;
+  virtual void BindFramebuffer() OVERRIDE;
+  virtual void Reshape(const gfx::Size& size, float scale_factor) OVERRIDE;
+  virtual bool BindToClient(cc::OutputSurfaceClient* client) OVERRIDE;
+
+  int z_order_;
+  bool expects_pageflip_messages_;
+  unsigned int internalformat_;
+  scoped_ptr<BufferedOutputSurface> output_surface_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_GPU_SURFACELESS_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_