Very basic Android browser-side compositing support.

content/public/browser/android/compositor.h

+// Copyright (c) 2012 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_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
+#define CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
+
+#include "base/callback.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/size.h"
+
+namespace WebKit {
+class WebLayer;
+}
+
+namespace content {
+
+// An interface for drawing to an embedder-supplied window surface.
+class Compositor {
+ public:
+  Compositor() {}
+  virtual ~Compositor() {}
+
+  static Compositor* GetInstance();
+
+  virtual void SetRootLayer(const WebKit::WebLayer& root) = 0;
+  virtual void SetWindowBounds(const gfx::Size& size) = 0;
+  virtual void SetWindowSurface(ANativeWindow* window) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_