[Mac] AppController needs to update its "last profile" pointer when the active profile is deleted

chrome/browser/app_controller_mac.mm

 // 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.
 
 #import "chrome/browser/app_controller_mac.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 567 matching lines @@
   // Build up the encoding menu, the order of the items differs based on the
   // current locale (see http://crbug.com/7647 for details).
   // We need a valid g_browser_process to get the profile which is why we can't
   // call this from awakeFromNib.
   NSMenu* viewMenu = [[[NSApp mainMenu] itemWithTag:IDC_VIEW_MENU] submenu];
   NSMenuItem* encodingMenuItem = [viewMenu itemWithTag:IDC_ENCODING_MENU];
   NSMenu* encodingMenu = [encodingMenuItem submenu];
   EncodingMenuControllerDelegate::BuildEncodingMenu([self lastProfile],
                                                     encodingMenu);
 
+  // Instantiate the ProfileInfoCache observer so that we can get
+  // notified when a profile is deleted.
+  profileInfoCacheObserver_ = new AppControllerProfileObserver(
+      g_browser_process->profile_manager(), self);
+
   // Since Chrome is localized to more languages than the OS, tell Cocoa which
   // menu is the Help so it can add the search item to it.
   [NSApp setHelpMenu:helpMenu_];
 
   // Record the path to the (browser) app bundle; this is used by the app mode
   // shim.
   RecordLastRunAppBundlePath();
 
   // Makes "Services" menu items available.
   [self registerServicesMenuTypesTo:[notify object]];
@@ skipping 109 matching lines @@
 
 // Called to determine if we should enable the "restore tab" menu item.
 // Checks with the TabRestoreService to see if there's anything there to
 // restore and returns YES if so.
 - (BOOL)canRestoreTab {
   TabRestoreService* service =
       TabRestoreServiceFactory::GetForProfile([self lastProfile]);
   return service && !service->entries().empty();
 }
 
+- (void)profileWasRemoved:(const string16&)profileName {
+  Profile* lastProfile = [self lastProfile];
+  string16 lastProfileName = UTF8ToUTF16(lastProfile->GetPrefs()->GetString(
+      prefs::kProfileName));
+
+  // If the last profile has been deleted, we must NULL out our pointer
+  // otherwise we will try to start up a browser window with a pointer
+  // to the old profile.
+  if (profileName == lastProfileName) {
+    lastProfile_ = NULL;
+  }
+}
+
 // Returns true if there is a modal window (either window- or application-
 // modal) blocking the active browser. Note that tab modal dialogs (HTTP auth
 // sheets) will not count as blocking the browser. But things like open/save
 // dialogs that are window modal will block the browser.
 - (BOOL)keyWindowIsModal {
   if ([NSApp modalWindow])
     return YES;
 
   Browser* browser = chrome::GetLastActiveBrowser();
   return browser &&
@@ skipping 589 matching lines @@
 
 //---------------------------------------------------------------------------
 
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac