Keep track of coalesced events in main thread event queue

content/browser/renderer_host/render_widget_host_view_aura_unittest.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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <tuple>
@@ skipping 656 matching lines @@
   void AckLastSentInputEventIfNecessary(InputEventAckState ack_result) {
     if (!sink_->message_count())
       return;
 
     InputMsg_HandleInputEvent::Param params;
     if (!InputMsg_HandleInputEvent::Read(
             sink_->GetMessageAt(sink_->message_count() - 1), &params)) {
       return;
     }
 
-    InputEventDispatchType dispatch_type = std::get<2>(params);
+    InputEventDispatchType dispatch_type = std::get<3>(params);
     if (dispatch_type == InputEventDispatchType::DISPATCH_TYPE_NON_BLOCKING)
       return;
 
     const blink::WebInputEvent* event = std::get<0>(params);
     SendTouchEventACK(event->type(), ack_result,
                       WebInputEventTraits::GetUniqueTouchEventId(*event));
   }
 
   const ui::MotionEventAura& pointer_state() {
     return view_->pointer_state_for_test();
@@ skipping 4071 matching lines @@
     // There is no composition in the beginning.
     EXPECT_FALSE(has_composition_text());
     SetHasCompositionTextToTrue();
     view->ImeCancelComposition();
     // The composition must have been canceled.
     EXPECT_FALSE(has_composition_text());
   }
 }
 
 }  // namespace content