Respect default browser policy

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2011 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 1433 matching lines @@
 
   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
     chrome_extra_parts_[i]->PreMainMessageLoopRun();
 }
 
 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   // Create watchdog thread after creating all other threads because it will
   // watch the other threads and they must be running.
   browser_process_->watchdog_thread();
 
+  // Do any initializating in the browser process that requires all threads
+  // running.
+  browser_process_->PreMainMessageLoopRun();
+
 #if defined(USE_WEBKIT_COMPOSITOR)
   // We need to ensure WebKit has been initialized before we start the WebKit
   // compositor. This is done by the ResourceDispatcherHost on creation.
   browser_process_->resource_dispatcher_host();
 #endif
 
 #if defined(OS_CHROMEOS)
   // Now that the file thread exists we can record our stats.
   chromeos::BootTimesLoader::Get()->RecordChromeMainStats();
 
@@ skipping 691 matching lines @@
   if (env->GetVar(chrome::kPreReadEnvironmentVariable, &pre_read) &&
       (pre_read == "0" || pre_read == "1")) {
     std::string uma_name(name);
     uma_name += "_PreRead";
     uma_name += pre_read == "1" ? "Enabled" : "Disabled";
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }