Introducing WebCoalescedInputEvent and inclusion in content/common

ui/events/blink/web_input_event_traits.cc

 // 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 "ui/events/blink/web_input_event_traits.h"
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
 using base::StringAppendF;
@@ skipping 117 matching lines @@
   template <class EventType>
   bool Execute(const WebInputEvent& event,
                ScopedWebInputEvent* scoped_event) const {
     DCHECK_EQ(sizeof(EventType), event.size);
     *scoped_event = ScopedWebInputEvent(
         new EventType(static_cast<const EventType&>(event)));
     return true;
   }
 };
 
-struct WebInputEventDelete {
-  template <class EventType>
-  bool Execute(WebInputEvent* event, bool* /* dummy_var */) const {
-    if (!event)
-      return false;
-    DCHECK_EQ(sizeof(EventType), event->size);
-    delete static_cast<EventType*>(event);
-    return true;
-  }
-};
-
 template <typename Operator, typename ArgIn, typename ArgOut>
 bool Apply(Operator op,
            WebInputEvent::Type type,
            const ArgIn& arg_in,
            ArgOut* arg_out) {
   if (WebInputEvent::isMouseEventType(type))
     return op.template Execute<WebMouseEvent>(arg_in, arg_out);
   else if (type == WebInputEvent::MouseWheel)
     return op.template Execute<WebMouseWheelEvent>(arg_in, arg_out);
   else if (WebInputEvent::isKeyboardEventType(type))
@@ skipping 20 matching lines @@
   Apply(WebInputEventSize(), type, type, &size);
   return size;
 }
 
 ScopedWebInputEvent WebInputEventTraits::Clone(const WebInputEvent& event) {
   ScopedWebInputEvent scoped_event;
   Apply(WebInputEventClone(), event.type, event, &scoped_event);
   return scoped_event;
 }
 
-void WebInputEventTraits::Delete(WebInputEvent* event) {
-  if (!event)
-    return;
-  bool dummy_var = false;
-  Apply(WebInputEventDelete(), event->type, event, &dummy_var);
-}
-
 bool WebInputEventTraits::ShouldBlockEventStream(const WebInputEvent& event) {
   switch (event.type) {
     case WebInputEvent::MouseDown:
     case WebInputEvent::MouseUp:
     case WebInputEvent::MouseEnter:
     case WebInputEvent::MouseLeave:
     case WebInputEvent::ContextMenu:
     case WebInputEvent::GestureScrollBegin:
     case WebInputEvent::GestureScrollEnd:
     case WebInputEvent::GestureShowPress:
@@ skipping 54 matching lines @@
     source_event_type = SourceEventType::WHEEL;
   } else if (event.sourceDevice ==
              blink::WebGestureDevice::WebGestureDeviceTouchscreen) {
     source_event_type = SourceEventType::TOUCH;
   }
   LatencyInfo latency_info(source_event_type);
   return latency_info;
 }
 
 }  // namespace ui