Add use-surfaces command-line flag

content/browser/compositor/onscreen_display_client.h

Index: content/browser/compositor/onscreen_display_client.h
diff --git a/content/browser/compositor/onscreen_display_client.h b/content/browser/compositor/onscreen_display_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..f4bf95b6c034aae8a7d0072fac8ea20b48769f23
--- /dev/null
+++ b/content/browser/compositor/onscreen_display_client.h
@@ -0,0 +1,44 @@
+// 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_ONSCREEN_DISPLAY_CLIENT_H_
+#define CONTENT_BROWSER_COMPOSITOR_ONSCREEN_DISPLAY_CLIENT_H_
+
+#include "cc/surfaces/display_client.h"
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/surfaces/display.h"
+
+namespace cc {
+class ContextProvider;
+class SurfaceManager;
+}
+
+namespace content {
+
+// This class provides a DisplayClient implementation for drawing directly to an
+// onscreen context.
+class OnscreenDisplayClient : cc::DisplayClient {
+ public:
+  OnscreenDisplayClient(
+      const scoped_refptr<cc::ContextProvider>& onscreen_context_provider,
+      cc::SurfaceManager* manager);
+  virtual ~OnscreenDisplayClient();
+
+  cc::Display* display() { return &display_; }
+
+  // cc::DisplayClient implementation.
+  virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface() OVERRIDE;
+
+ private:
+  scoped_refptr<cc::ContextProvider> onscreen_context_provider_;
+  cc::Display display_;
+
+  DISALLOW_COPY_AND_ASSIGN(OnscreenDisplayClient);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_ONSCREEN_DISPLAY_CLIENT_H_