Send input event's LatencyInfo back from renderer to browser when acked

content/browser/renderer_host/render_widget_host_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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/timer/timer.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/renderer_host/backing_store.h"
@@ skipping 696 matching lines @@
     screen_.reset();
 #endif
 
     // Process all pending tasks to avoid leaks.
     base::MessageLoop::current()->RunUntilIdle();
   }
 
   void SendInputEventACK(WebInputEvent::Type type,
                          InputEventAckState ack_result) {
     scoped_ptr<IPC::Message> response(
-        new InputHostMsg_HandleInputEvent_ACK(0, type, ack_result));
+        new InputHostMsg_HandleInputEvent_ACK(0, type, ack_result,
+                                              ui::LatencyInfo()));
     host_->OnMessageReceived(*response);
   }
 
   void SimulateKeyboardEvent(WebInputEvent::Type type) {
     NativeWebKeyboardEvent key_event;
     key_event.type = type;
     key_event.windowsKeyCode = ui::VKEY_L;  // non-null made up value.
     host_->ForwardKeyboardEvent(key_event);
   }
 
@@ skipping 3524 matching lines @@
   EXPECT_EQ(OVERSCROLL_NONE, host_->overscroll_delegate()->completed_mode());
 
   SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                        WebGestureEvent::Touchscreen);
   EXPECT_EQ(OVERSCROLL_NONE, host_->overscroll_delegate()->current_mode());
   EXPECT_EQ(OVERSCROLL_EAST, host_->overscroll_delegate()->completed_mode());
   process_->sink().ClearMessages();
 }
 
 }  // namespace content