Keep track of coalesced events in main thread event queue

third_party/WebKit/Source/platform/exported/WebCoalescedInputEvent.cpp

 // Copyright 2016 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 "public/platform/WebCoalescedInputEvent.h"
 
 #include "public/platform/WebGestureEvent.h"
 #include "public/platform/WebMouseWheelEvent.h"
 
 namespace blink {
@@ skipping 70 matching lines @@
 }
 
 const WebInputEvent& WebCoalescedInputEvent::event() const {
   return *m_event.get();
 }
 
 size_t WebCoalescedInputEvent::coalescedEventSize() const {
   return m_coalescedEvents.size();
 }
 
-const WebInputEvent* WebCoalescedInputEvent::coalescedEvent(int index) const {
-  return m_coalescedEvents[index].get();
+const WebInputEvent& WebCoalescedInputEvent::coalescedEvent(
+    size_t index) const {
+  return *m_coalescedEvents[index].get();
 }
 
 std::vector<const WebInputEvent*>
 WebCoalescedInputEvent::getCoalescedEventsPointers() const {
   std::vector<const WebInputEvent*> events;
   for (const auto& event : m_coalescedEvents)
     events.push_back(event.get());
   return events;
 }
 
 WebCoalescedInputEvent::WebCoalescedInputEvent(WebScopedInputEvent event)
     : m_event(std::move(event)), m_coalescedEvents() {
   m_coalescedEvents.push_back(makeWebScopedInputEvent(*(m_event.get())));
 }
 
 WebCoalescedInputEvent::WebCoalescedInputEvent(const WebInputEvent& event)
     : m_event(), m_coalescedEvents() {
   m_event = makeWebScopedInputEvent(event);
   m_coalescedEvents.push_back(makeWebScopedInputEvent(event));
 }
 
 WebCoalescedInputEvent::WebCoalescedInputEvent(
     const WebInputEvent& event,
     const std::vector<const WebInputEvent*>& coalescedEvents)
-    : m_event(), m_coalescedEvents(coalescedEvents.size()) {
+    : m_event(), m_coalescedEvents() {

[kinuko, 2017/01/19 13:40:18]

I don't think we need these empty initializers here?  (unique_ptr and vector's
default ctor would do it)

[Navid Zolghadr, 2017/01/19 21:46:25]

Done.

   m_event = makeWebScopedInputEvent(event);
   for (const auto& coalescedEvent : coalescedEvents)
     m_coalescedEvents.push_back(makeWebScopedInputEvent(*coalescedEvent));
 }
 
 }  // namespace blink