Extract locking behaviour from ProcessSingleton.

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"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 730 matching lines @@
 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
   run_message_loop_ = false;
   user_data_dir_ = chrome::GetUserDataDir(parameters());
 
   // Whether this is First Run. |do_first_run_tasks_| should be prefered to this
   // unless the desire is actually to know whether this is really First Run
   // (i.e., even if --no-first-run is passed).
   bool is_first_run = false;
   // Android's first run is done in Java instead of native.
 #if !defined(OS_ANDROID)
-
-  process_singleton_.reset(new ProcessSingleton(
+  process_singleton_.reset(new ChromeProcessSingleton(
       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
-  // Ensure ProcessSingleton won't process messages too early. It will be
-  // unlocked in PostBrowserStart().
-  process_singleton_->Lock(NULL);
 
   bool force_first_run =
       parsed_command_line().HasSwitch(switches::kForceFirstRun);
   bool force_skip_first_run_tasks =
       (!force_first_run &&
        parsed_command_line().HasSwitch(switches::kNoFirstRun));
 
   is_first_run =
       (force_first_run || first_run::IsChromeFirstRun()) &&
       !ProfileManager::IsImportProcess(parsed_command_line());
@@ skipping 400 matching lines @@
   std::string try_chrome =
       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
   if (!try_chrome.empty()) {
 #if defined(OS_WIN)
     // Setup.exe has determined that we need to run a retention experiment
     // and has lauched chrome to show the experiment UI. It is guaranteed that
     // no other Chrome is currently running as the process singleton was
     // sucessfully grabbed above.
     int try_chrome_int;
     base::StringToInt(try_chrome, &try_chrome_int);
-    TryChromeDialogView::Result answer =
-        TryChromeDialogView::Show(try_chrome_int, process_singleton_.get());
+    TryChromeDialogView::Result answer = TryChromeDialogView::Show(
+        try_chrome_int,
+        base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
+                   base::Unretained(process_singleton_.get())));
     if (answer == TryChromeDialogView::NOT_NOW)
       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
     // At this point the user is willing to try chrome again.
     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
       // Only set in the unattended case, the interactive case is Windows 8.
       if (ShellIntegration::CanSetAsDefaultBrowser() ==
           ShellIntegration::SET_DEFAULT_UNATTENDED)
         ShellIntegration::SetAsDefaultBrowser();
@@ skipping 81 matching lines @@
 #if !defined(OS_ANDROID)
   // Show the First Run UI if this is the first time Chrome has been run on
   // this computer, or we're being compelled to do so by a command line flag.
   // Note that this be done _after_ the PrefService is initialized and all
   // preferences are registered, since some of the code that the importer
   // touches reads preferences.
   if (do_first_run_tasks_) {
     first_run::AutoImport(profile_,
                           master_prefs_->homepage_defined,
                           master_prefs_->do_import_items,
-                          master_prefs_->dont_import_items,
-                          process_singleton_.get());
+                          master_prefs_->dont_import_items);
     // Note: this can pop the first run consent dialog on linux.
     first_run::DoPostImportTasks(profile_, master_prefs_->make_chrome_default);
 
     browser_process_->profile_manager()->OnImportFinished(profile_);
 
     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
       browser_creator_->set_show_main_browser_window(
           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
     } else {
       browser_creator_->set_is_default_browser_dialog_suppressed(true);
@@ skipping 443 matching lines @@
     if (base::win::GetVersion() <= base::win::VERSION_XP)
       uma_name += "_XP";
 
     uma_name += "_PreRead_";
     uma_name += pre_read_percentage;
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }