Moves RenderProcessHostImpl::init_time() to RenderProcessHost to fix broken test.

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/navigator_impl.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 879 matching lines @@
     DCHECK(!navigation_data_->before_unload_delay_.InMicroseconds());
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToCommit_SessionRestored",
         time_to_commit);
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToURLJobStart_SessionRestored",
         time_to_network);
     navigation_data_.reset();
     return;
   }
-  RenderProcessHostImpl* process_host =
-      static_cast<RenderProcessHostImpl*>(site_instance->GetProcess());
   bool navigation_created_new_renderer_process =
-      process_host->init_time() > navigation_data_->start_time_;
+      site_instance->GetProcess()->GetInitTimeForNavigationMetrics() >
+      navigation_data_->start_time_;
   if (navigation_created_new_renderer_process) {
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToCommit_NewRenderer_BeforeUnloadDiscounted",
         time_to_commit);
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToURLJobStart_NewRenderer_BeforeUnloadDiscounted",
         time_to_network);
   } else {
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToCommit_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_commit);
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToURLJobStart_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_network);
   }
   navigation_data_.reset();
 }
 
 }  // namespace content