Support Coalesced Touch in ppapi

third_party/WebKit/public/platform/WebCoalescedInputEvent.h

 // 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.
 
 #ifndef WebCoalescedInputEvent_h
 #define WebCoalescedInputEvent_h
 
 #include "WebCommon.h"
 #include "WebInputEvent.h"
 
 #include <memory>
 #include <vector>
 
 namespace blink {
 
 // This class is representing a polymorphic WebInputEvent structure with its
 // coalesced events. The event could be any events defined in WebInputEvent.h.
 class BLINK_PLATFORM_EXPORT WebCoalescedInputEvent {
  public:
   explicit WebCoalescedInputEvent(const WebInputEvent&);
   WebCoalescedInputEvent(const WebInputEvent&,
                          const std::vector<const WebInputEvent*>&);
+  // Copy constructor to deep copy the event.
+  WebCoalescedInputEvent(const WebCoalescedInputEvent&);
 
   WebInputEvent* EventPointer();
   void AddCoalescedEvent(const blink::WebInputEvent&);
   const WebInputEvent& Event() const;
   size_t CoalescedEventSize() const;
   const WebInputEvent& CoalescedEvent(size_t index) const;
   std::vector<const WebInputEvent*> GetCoalescedEventsPointers() const;
 
  private:
   // TODO(hans): Remove this once clang-cl knows to not inline dtors that
   // call operator(), https://crbug.com/691714
   struct BLINK_PLATFORM_EXPORT WebInputEventDeleter {
     void operator()(blink::WebInputEvent*) const;
   };
 
   using WebScopedInputEvent =
       std::unique_ptr<WebInputEvent, WebInputEventDeleter>;
 
   WebScopedInputEvent MakeWebScopedInputEvent(const blink::WebInputEvent&);
 
   WebScopedInputEvent event_;
   std::vector<WebScopedInputEvent> coalesced_events_;
 };
 
 using WebScopedCoalescedInputEvent = std::unique_ptr<WebCoalescedInputEvent>;
 
 }  // namespace blink
 
 #endif