Implement Main Thread RAF Aligned Input

content/renderer/input/input_event_filter.cc

 // Copyright 2013 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.
 
 #include "content/renderer/input/input_event_filter.h"
 
 #include <tuple>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 100 matching lines @@
     base::AutoLock locked(routes_lock_);
     RouteQueueMap::iterator iter = route_queues_.find(routing_id);
     if (iter == route_queues_.end() || !iter->second)
       return;
     queue = iter->second;
   }
 
   queue->EventHandled(type, ack_result);
 }
 
+void InputEventFilter::ProcessVSyncAlignedInput(int routing_id) {
+  DCHECK(main_task_runner_->BelongsToCurrentThread());
+  scoped_refptr<MainThreadEventQueue> queue;
+  {
+    base::AutoLock locked(routes_lock_);
+    RouteQueueMap::iterator iter = route_queues_.find(routing_id);
+    if (iter == route_queues_.end() || !iter->second)
+      return;
+    queue = iter->second;
+  }
+
+  queue->DispatchVSyncAlignedInput();
+}
+
 void InputEventFilter::OnFilterAdded(IPC::Sender* sender) {
   io_task_runner_ = base::ThreadTaskRunnerHandle::Get();
   sender_ = sender;
 }
 
 void InputEventFilter::OnFilterRemoved() {
   sender_ = NULL;
 }
 
 void InputEventFilter::OnChannelClosing() {
@@ skipping 120 matching lines @@
 void InputEventFilter::SendInputEventAck(int routing_id,
                                          blink::WebInputEvent::Type type,
                                          InputEventAckState ack_result,
                                          uint32_t touch_event_id) {
   InputEventAck ack(type, ack_result, touch_event_id);
   SendMessage(std::unique_ptr<IPC::Message>(
       new InputHostMsg_HandleInputEvent_ACK(routing_id, ack)));
 }
 
 }  // namespace content