WIP: Plumbing input event latency reporting through Mus GPU.

content/browser/renderer_host/input/render_widget_host_latency_tracker_unittest.cc

 // Copyright 2014 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/test/histogram_tester.h"
 #include "components/rappor/public/rappor_utils.h"
 #include "components/rappor/test_rappor_service.h"
 #include "content/browser/renderer_host/input/render_widget_host_latency_tracker.h"
 #include "content/common/input/synthetic_web_input_event_builders.h"
 #include "content/public/browser/native_web_keyboard_event.h"
@@ skipping 17 matching lines @@
   latency->AddLatencyNumberWithTimestamp(ui::INPUT_EVENT_LATENCY_UI_COMPONENT,
                                          0, 0, time_stamp, 1);
   latency->AddLatencyNumberWithTimestamp(
       ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0, time_stamp,
       1);
   latency->AddLatencyNumberWithTimestamp(
       ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0, 0, time_stamp, 1);
   latency->AddLatencyNumberWithTimestamp(
       ui::INPUT_EVENT_LATENCY_RENDERER_SWAP_COMPONENT, 0, 0, time_stamp, 1);
   latency->AddLatencyNumberWithTimestamp(
-      ui::INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT, 0, 0,
-      time_stamp, 1);
+      ui::DISPLAY_COMPOSITOR_RECEIVED_FRAME_COMPONENT, 0, 0, time_stamp, 1);
 }
 
 void AddFakeComponents(const RenderWidgetHostLatencyTracker& tracker,
                        ui::LatencyInfo* latency) {
   latency->AddLatencyNumberWithTimestamp(
       ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
       tracker.latency_component_id(), 0, base::TimeTicks::Now(), 1);
   AddFakeComponentsWithTimeStamp(tracker, latency, base::TimeTicks::Now());
 }
 
@@ skipping 1028 matching lines @@
 
     tracker()->OnInputEventAck(wheel_event, &latency, ack_state);
   }
 
   EXPECT_THAT(histogram_tester().GetAllSamples(
                   "Event.Latency.QueueingTime.MouseWheelDefaultAllowed"),
               ElementsAre(Bucket(14, 1)));
 }
 
 }  // namespace content