Keep track of coalesced events in main thread event queue

content/browser/renderer_host/render_widget_host_view_mac_unittest.mm

 // 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_mac.h"
 
 #include <Cocoa/Cocoa.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <tuple>
@@ skipping 1156 matching lines @@
         message = process_host_->sink().GetMessageAt(0);
         break;
       case 2:
         message = process_host_->sink().GetMessageAt(1);
         break;
       default:
         NOTREACHED();
         break;
     }
     DCHECK(message);
-    std::tuple<IPC::WebInputEventPointer, ui::LatencyInfo,
+    std::tuple<IPC::WebInputEventPointer,
+               std::vector<IPC::WebInputEventPointer>, ui::LatencyInfo,
                InputEventDispatchType>
         data;
     InputMsg_HandleInputEvent::Read(message, &data);
     IPC::WebInputEventPointer ipc_event = std::get<0>(data);
     const blink::WebGestureEvent* gesture_event =
         static_cast<const blink::WebGestureEvent*>(ipc_event);
     return gesture_event->data.pinchUpdate.zoomDisabled;
   }
 
   MockRenderProcessHost* process_host_;
@@ skipping 451 matching lines @@
   // Verify that this IPC is asking for no monitoring or immediate updates.
   InputMsg_RequestCompositionUpdate::Read(composition_request_msg_for_child,
                                           &child_msg_params);
   is_child_msg_for_immediate_request = std::get<0>(child_msg_params);
   is_child_msg_for_monitor_request = std::get<1>(child_msg_params);
   EXPECT_FALSE(is_child_msg_for_immediate_request);
   EXPECT_FALSE(is_child_msg_for_monitor_request);
 }
 
 }  // namespace content