Implement Main Thread RAF Aligned Input

content/renderer/render_widget.cc

 // 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.
 
 #include "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 688 matching lines @@
     const gfx::Vector2dF& outer_delta,
     const gfx::Vector2dF& elastic_overscroll_delta,
     float page_scale,
     float top_controls_delta) {
   webwidget_->applyViewportDeltas(inner_delta, outer_delta,
                                   elastic_overscroll_delta, page_scale,
                                   top_controls_delta);
 }
 
 void RenderWidget::BeginMainFrame(double frame_time_sec) {
+  RenderThreadImpl* render_thread = RenderThreadImpl::current();
+  // render_thread may be NULL in tests.
+  InputHandlerManager* input_handler_manager =
+      render_thread ? render_thread->input_handler_manager() : NULL;
+  if (input_handler_manager)
+    input_handler_manager->ProcessVSyncAlignedInputOnMainThread(routing_id_);
+
   webwidget_->beginFrame(frame_time_sec);
 }
 
 std::unique_ptr<cc::OutputSurface> RenderWidget::CreateOutputSurface(
     bool fallback) {
   DCHECK(webwidget_);
   // For widgets that are never visible, we don't start the compositor, so we
   // never get a request for a cc::OutputSurface.
   DCHECK(!compositor_never_visible_);
   return RenderThreadImpl::current()->CreateCompositorOutputSurface(
@@ skipping 1258 matching lines @@
 void RenderWidget::requestPointerUnlock() {
   mouse_lock_dispatcher_->UnlockMouse(webwidget_mouse_lock_target_.get());
 }
 
 bool RenderWidget::isPointerLocked() {
   return mouse_lock_dispatcher_->IsMouseLockedTo(
       webwidget_mouse_lock_target_.get());
 }
 
 }  // namespace content