Keep track of coalesced events in main thread event queue

content/renderer/gpu/gpu_benchmarking_extension.cc

 // Copyright (c) 2012 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/gpu/gpu_benchmarking_extension.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 336 matching lines @@
     // Ensure the mouse is centered and visible, in case it will
     // trigger any hover or mousemove effects.
     context.web_view()->setIsActive(true);
     blink::WebRect contentRect =
         context.web_view()->mainFrame()->visibleContentRect();
     blink::WebMouseEvent mouseMove(
         blink::WebInputEvent::MouseMove, blink::WebInputEvent::NoModifiers,
         ui::EventTimeStampToSeconds(ui::EventTimeForNow()));
     mouseMove.x = (contentRect.x + contentRect.width / 2) * page_scale_factor;
     mouseMove.y = (contentRect.y + contentRect.height / 2) * page_scale_factor;
-    context.web_view()->handleInputEvent(mouseMove);
+    context.web_view()->handleInputEvent(
+        blink::WebCoalescedInputEvent(mouseMove));
     context.web_view()->setCursorVisibilityState(true);
   }
 
   scoped_refptr<CallbackAndContext> callback_and_context =
       new CallbackAndContext(
           isolate, callback, context.web_frame()->mainWorldScriptContext());
 
   std::unique_ptr<SyntheticSmoothScrollGestureParams> gesture_params(
       new SyntheticSmoothScrollGestureParams);
 
@@ skipping 728 matching lines @@
           &gpu_driver_bug_workarounds))) {
     return;
   }
 
   v8::Local<v8::Value> result;
   if (gin::TryConvertToV8(args->isolate(), gpu_driver_bug_workarounds, &result))
     args->Return(result);
 }
 
 }  // namespace content