Add latency measurement system

content/renderer/gpu/input_event_filter_unittest.cc

Index: content/renderer/gpu/input_event_filter_unittest.cc
diff --git a/content/renderer/gpu/input_event_filter_unittest.cc b/content/renderer/gpu/input_event_filter_unittest.cc
index 9651d46c7b46848a3ef8e6983170b993536ef3da..4f878ddc5522919e3cb433c5ce271d8f5de83a15 100644
--- a/content/renderer/gpu/input_event_filter_unittest.cc
+++ b/content/renderer/gpu/input_event_filter_unittest.cc
@@ -44,7 +44,8 @@ class InputEventRecorder {
     records_.clear();
   }
 
-  void HandleInputEvent(int routing_id, const WebInputEvent* event) {
+  void HandleInputEvent(int routing_id, int64 input_number,
+                        const WebInputEvent* event) {
     DCHECK_EQ(kTestRoutingID, routing_id);
 
     records_.push_back(Record(event));
@@ -107,7 +108,7 @@ void AddEventsToFilter(IPC::ChannelProxy::MessageFilter* message_filter,
                        const WebMouseEvent events[],
                        size_t count) {
   for (size_t i = 0; i < count; ++i) {
-    ViewMsg_HandleInputEvent message(kTestRoutingID, &events[i], false);
+    ViewMsg_HandleInputEvent message(kTestRoutingID, 0, &events[i], false);
     message_filter->OnMessageReceived(message);
   }
 
@@ -183,9 +184,13 @@ TEST(InputEventFilterTest, Basic) {
   for (size_t i = 0; i < arraysize(kEvents); ++i) {
     const IPC::Message& message = message_recorder.message_at(i);
 
+    int64 input_number;
     ASSERT_EQ(ViewMsg_HandleInputEvent::ID, message.type());
-    const WebInputEvent* event = InputEventFilter::CrackMessage(message);
+    InputEventFilter::CrackMessage(message, NULL);
+    const WebInputEvent* event = InputEventFilter::CrackMessage(message,
+                                                                &input_number);
 
+    EXPECT_EQ(input_number, 0);
     EXPECT_EQ(kEvents[i].size, event->size);
     EXPECT_TRUE(memcmp(&kEvents[i], event, event->size) == 0);
   }