Switching to base::Optional<CompositorFrame> in Android's synchronous compositor IPC messages

content/renderer/android/synchronous_compositor_proxy.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_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_PROXY_H_
 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_PROXY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 77 matching lines @@
       const gfx::Point& anchor,
       SyncCompositorCommonRendererParams* common_renderer_params);
   void SetScroll(const gfx::ScrollOffset& total_scroll_offset);
 
   void SubmitCompositorFrameHwAsync(uint32_t compositor_frame_sink_id,
                                     cc::CompositorFrame frame);
   void SubmitCompositorFrameHw(uint32_t compositor_frame_sink_id,
                                cc::CompositorFrame frame);
   void SendDemandDrawHwReply(cc::CompositorFrame frame,
                              uint32_t compositor_frame_sink_id,
+                             bool has_swapped,
                              IPC::Message* reply_message);
   void SendDemandDrawHwReplyAsync(cc::CompositorFrame frame,
-                                  uint32_t compositor_frame_sink_id);
+                                  uint32_t compositor_frame_sink_id,
+                                  bool has_swapped);
   void DoDemandDrawSw(const SyncCompositorDemandDrawSwParams& params);
   void SubmitCompositorFrameSw(cc::CompositorFrame frame);
   void SendDemandDrawSwReply(bool success,
                              cc::CompositorFrame frame,
                              IPC::Message* reply_message);
   void SendAsyncRendererStateIfNeeded();
   void DoDemandDrawHw(const SyncCompositorDemandDrawHwParams& params,
                       IPC::Message* reply_message);
 
   const int routing_id_;
@@ skipping 20 matching lines @@
   bool need_animate_scroll_;
   uint32_t need_invalidate_count_;
   uint32_t did_activate_pending_tree_count_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_PROXY_H_