Use TimeTicks as much as possible in startup_metric_utils.

mojo/services/tracing/tracing_app.cc

 // Copyright 2015 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 "mojo/services/tracing/tracing_app.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/application/public/cpp/application_connection.h"
@@ skipping 118 matching lines @@
 void TracingApp::SetShellProcessCreationTime(int64 time) {
   if (startup_performance_times_.shell_process_creation_time == 0)
     startup_performance_times_.shell_process_creation_time = time;
 }
 
 void TracingApp::SetShellMainEntryPointTime(int64 time) {
   if (startup_performance_times_.shell_main_entry_point_time == 0)
     startup_performance_times_.shell_main_entry_point_time = time;
 }
 
-void TracingApp::SetBrowserMessageLoopStartTime(int64 time) {
-  if (startup_performance_times_.browser_message_loop_start_time == 0)
-    startup_performance_times_.browser_message_loop_start_time = time;
+void TracingApp::SetBrowserMessageLoopStartTicks(int64 ticks) {
+  if (startup_performance_times_.browser_message_loop_start_ticks == 0)
+    startup_performance_times_.browser_message_loop_start_ticks = ticks;
 }
 
-void TracingApp::SetBrowserWindowDisplayTime(int64 time) {
-  if (startup_performance_times_.browser_window_display_time == 0)
-    startup_performance_times_.browser_window_display_time = time;
+void TracingApp::SetBrowserWindowDisplayTicks(int64 ticks) {
+  if (startup_performance_times_.browser_window_display_ticks == 0)
+    startup_performance_times_.browser_window_display_ticks = ticks;
 }
 
 void TracingApp::SetBrowserOpenTabsTimeDelta(int64 delta) {
   if (startup_performance_times_.browser_open_tabs_time_delta == 0)
     startup_performance_times_.browser_open_tabs_time_delta = delta;
 }
 
-void TracingApp::SetFirstWebContentsMainFrameLoadTime(int64 time) {
-  if (startup_performance_times_.first_web_contents_main_frame_load_time == 0)
-    startup_performance_times_.first_web_contents_main_frame_load_time = time;
+void TracingApp::SetFirstWebContentsMainFrameLoadTicks(int64 ticks) {
+  if (startup_performance_times_.first_web_contents_main_frame_load_ticks == 0)
+    startup_performance_times_.first_web_contents_main_frame_load_ticks = ticks;
 }
 
-void TracingApp::SetFirstVisuallyNonEmptyLayoutTime(int64 time) {
-  if (startup_performance_times_.first_visually_non_empty_layout_time == 0)
-    startup_performance_times_.first_visually_non_empty_layout_time = time;
+void TracingApp::SetFirstVisuallyNonEmptyLayoutTicks(int64 ticks) {
+  if (startup_performance_times_.first_visually_non_empty_layout_ticks == 0)
+    startup_performance_times_.first_visually_non_empty_layout_ticks = ticks;
 }
 
 void TracingApp::GetStartupPerformanceTimes(
     const GetStartupPerformanceTimesCallback& callback) {
   callback.Run(startup_performance_times_.Clone());
 }
 
 void TracingApp::AllDataCollected() {
   recorder_impls_.clear();
   sink_.reset();
 }
 
 }  // namespace tracing