Keep track of coalesced events in main thread event queue

components/plugins/renderer/webview_plugin.cc

 // Copyright 2013 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 "components/plugins/renderer/webview_plugin.h"
 
 #include <stddef.h>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/common/web_preferences.h"
 #include "content/public/renderer/render_view.h"
 #include "gin/converter.h"
 #include "skia/ext/platform_canvas.h"
-#include "third_party/WebKit/public/platform/WebInputEvent.h"
+#include "third_party/WebKit/public/platform/WebCoalescedInputEvent.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLResponse.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebPluginContainer.h"
 #include "third_party/WebKit/public/web/WebView.h"
 
 using blink::WebCanvas;
@@ skipping 181 matching lines @@
 
   if (event.type() == WebInputEvent::ContextMenu) {
     if (delegate_) {
       const WebMouseEvent& mouse_event =
           reinterpret_cast<const WebMouseEvent&>(event);
       delegate_->ShowContextMenu(mouse_event);
     }
     return blink::WebInputEventResult::HandledSuppressed;
   }
   current_cursor_ = cursor;
-  blink::WebInputEventResult handled = web_view()->handleInputEvent(event);
+  blink::WebInputEventResult handled =
+      web_view()->handleInputEvent(blink::WebCoalescedInputEvent(event));
   cursor = current_cursor_;
 
   return handled;
 }
 
 void WebViewPlugin::didReceiveResponse(const WebURLResponse& response) {
   DCHECK(response_.isNull());
   response_ = response;
 }
 
@@ skipping 112 matching lines @@
   if (!delegate_)
     return;
 
   // The delegate may instantiate a new plugin.
   delegate_->OnUnobscuredRectUpdate(gfx::Rect(unobscured_rect));
   // The delegate may have dirtied style and layout of the WebView.
   // See for example the resizePoster function in plugin_poster.html.
   // Run the lifecycle now so that it is clean.
   web_view()->updateAllLifecyclePhases();
 }