Keep track of coalesced events in main thread event queue

content/renderer/gpu/gpu_benchmarking_extension.cc

Index: content/renderer/gpu/gpu_benchmarking_extension.cc
diff --git a/content/renderer/gpu/gpu_benchmarking_extension.cc b/content/renderer/gpu/gpu_benchmarking_extension.cc
index 196746a154b6a78af2e52fbb89daf6029992c1d7..e9034af09313eacbb9d99637def66bebe18a616a 100644
--- a/content/renderer/gpu/gpu_benchmarking_extension.cc
+++ b/content/renderer/gpu/gpu_benchmarking_extension.cc
@@ -354,7 +354,8 @@ bool BeginSmoothScroll(v8::Isolate* isolate,
         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);
   }