Use TimeTicks as much as possible in startup_metric_utils.

components/html_viewer/html_frame.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 "components/html_viewer/html_frame.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/bind.h"
@@ skipping 408 matching lines @@
 }
 
 bool HTMLFrame::hasPendingNavigation(blink::WebLocalFrame* frame) {
   return pending_navigation_;
 }
 
 void HTMLFrame::didHandleOnloadEvents(blink::WebLocalFrame* frame) {
   DVLOG(2) << "XXX HTMLFrame::didHandleOnloadEvents id=" << id_;
   static bool recorded = false;
   if (!recorded && startup_performance_data_collector_) {
-    startup_performance_data_collector_->SetFirstWebContentsMainFrameLoadTime(
-        base::Time::Now().ToInternalValue());
+    startup_performance_data_collector_->SetFirstWebContentsMainFrameLoadTicks(
+        base::TimeTicks::Now().ToInternalValue());
     recorded = true;
   }
 }
 
 void HTMLFrame::didAddMessageToConsole(const blink::WebConsoleMessage& message,
                                        const blink::WebString& source_name,
                                        unsigned source_line,
                                        const blink::WebString& stack_trace) {
   VLOG(1) << "[" << source_name.utf8() << "(" << source_line << ")] "
           << message.text.utf8();
@@ skipping 595 matching lines @@
 
   if (!surface_layer_)
     return;
 
   surface_layer_->SetSurfaceId(cc::SurfaceId(owned_window_->window()->id()),
                                global_state()->device_pixel_ratio(),
                                owned_window_->window()->bounds().size());
 }
 
 }  // namespace mojo