Implement profiler log writing at shutdown

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2012 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 "chrome/browser/chrome_browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1137 matching lines @@
   }
 
   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
     // User wants to override default tracking status.
     std::string flag =
       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
     bool enabled = flag.compare("0") != 0;
     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(enabled);
   }
 
+  if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
+    tracking_objects_.set_output_file_path(
+        parsed_command_line().GetSwitchValuePath(
+            switches::kProfilingOutputFile));
+  }
+
   // This forces the TabCloseableStateWatcher to be created and, on chromeos,
   // register for the notifications it needs to track the closeable state of
   // tabs.
   browser_process_->tab_closeable_state_watcher();
 
   local_state_ = InitializeLocalState(parsed_command_line(),
                                       is_first_run_);
 
   // These members must be initialized before returning from this function.
   master_prefs_.reset(new first_run::MasterPrefs);
@@ skipping 768 matching lines @@
     if (base::win::GetVersion() <= base::win::VERSION_XP)
       uma_name += "_XP";
 
     uma_name += "_PreRead";
     uma_name += pre_read == "1" ? "Enabled" : "Disabled";
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }