Android Webview IPC-based sync compositing

content/browser/android/synchronous_compositor_base.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 CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_
+#define CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "content/common/input/input_event_ack_state.h"
+#include "content/public/browser/android/synchronous_compositor.h"
+
+namespace IPC {
+class Message;
+}
+
+namespace blink {
+class WebInputEvent;
+}
+
+namespace cc {
+struct BeginFrameArgs;
+}
+
+namespace content {
+
+class RenderWidgetHostViewAndroid;
+class WebContents;
+
+class SynchronousCompositorBase : public SynchronousCompositor {
+ public:
+  static scoped_ptr<SynchronousCompositorBase> Create(
+      RenderWidgetHostViewAndroid* rwhva,
+      WebContents* web_contents);
+
+  ~SynchronousCompositorBase() override {}
+
+  virtual void BeginFrame(const cc::BeginFrameArgs& args) = 0;
+  virtual InputEventAckState HandleInputEvent(
+      const blink::WebInputEvent& input_event) = 0;
+  virtual bool OnMessageReceived(const IPC::Message& message) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_