Keep track of coalesced events in main thread event queue

content/renderer/input/render_widget_input_handler.cc

 // 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.
 
 #include "content/renderer/input/render_widget_input_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 189 matching lines @@
       context_menu_source_type_(ui::MENU_SOURCE_MOUSE),
       suppress_next_char_events_(false) {
   DCHECK(delegate);
   DCHECK(widget);
   delegate->SetInputHandler(this);
 }
 
 RenderWidgetInputHandler::~RenderWidgetInputHandler() {}
 
 void RenderWidgetInputHandler::HandleInputEvent(
-    const WebInputEvent& input_event,
+    const blink::WebCoalescedInputEvent& coalesced_event,
     const ui::LatencyInfo& latency_info,
     InputEventDispatchType dispatch_type) {
+  const WebInputEvent& input_event = coalesced_event.event();
   base::AutoReset<bool> handling_input_event_resetter(&handling_input_event_,
                                                       true);
   base::AutoReset<WebInputEvent::Type> handling_event_type_resetter(
       &handling_event_type_, input_event.type());
 
   // Calls into |didOverscroll()| while handling this event will populate
   // |event_overscroll|, which in turn will be bundled with the event ack.
   std::unique_ptr<DidOverscrollParams> event_overscroll;
   base::AutoReset<std::unique_ptr<DidOverscrollParams>*>
       handling_event_overscroll_resetter(&handling_event_overscroll_,
@@ skipping 78 matching lines @@
         prevent_default || delegate_->WillHandleGestureEvent(gesture_event);
   }
 
   WebInputEventResult processed = prevent_default
                                       ? WebInputEventResult::HandledSuppressed
                                       : WebInputEventResult::NotHandled;
   if (input_event.type() != WebInputEvent::Char ||
       !suppress_next_char_events_) {
     suppress_next_char_events_ = false;
     if (processed == WebInputEventResult::NotHandled && widget_->GetWebWidget())
-      processed = widget_->GetWebWidget()->handleInputEvent(input_event);
+      processed = widget_->GetWebWidget()->handleInputEvent(coalesced_event);
   }
 
   // TODO(dtapuska): Use the input_event.timeStampSeconds as the start
   // ideally this should be when the event was sent by the compositor to the
   // renderer. crbug.com/565348
   if (input_event.type() == WebInputEvent::TouchStart ||
       input_event.type() == WebInputEvent::TouchMove ||
       input_event.type() == WebInputEvent::TouchEnd) {
     const WebTouchEvent& touch = static_cast<const WebTouchEvent&>(input_event);
 
@@ skipping 141 matching lines @@
   // it can be bundled in the event ack.
   if (handling_event_overscroll_) {
     *handling_event_overscroll_ = std::move(params);
     return;
   }
 
   delegate_->OnDidOverscroll(*params);
 }
 
 }  // namespace content