Implement Main Thread RAF Aligned Input

content/renderer/input/input_event_filter.cc

Index: content/renderer/input/input_event_filter.cc
diff --git a/content/renderer/input/input_event_filter.cc b/content/renderer/input/input_event_filter.cc
index 12df1150be08e41efe8e2e6b875b6a3f11d81e8b..557de46398d2e8ed47135063f21bf256e3c806f1 100644
--- a/content/renderer/input/input_event_filter.cc
+++ b/content/renderer/input/input_event_filter.cc
@@ -118,6 +118,20 @@ void InputEventFilter::NotifyInputEventHandled(int routing_id,
   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;