Introduce AppsClient and use it in apps to get the loaded profiles list.

chrome/browser/ui/cocoa/apps/app_shim_menu_controller_mac_browsertest.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/apps/app_shim_menu_controller_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "apps/shell_window_registry.h"
 #include "base/command_line.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 
 namespace {
 
 class AppShimMenuControllerBrowserTest
     : public extensions::PlatformAppBrowserTest {
  protected:
   AppShimMenuControllerBrowserTest()
       : app_1_(NULL),
@@ skipping 105 matching lines @@
   [[NSNotificationCenter defaultCenter]
       postNotificationName:NSWindowDidBecomeMainNotification
                     object:app_1_shell_window->GetNativeWindow()];
 
   CheckHasAppMenus(app_1_);
   ExtensionService::UninstallExtensionHelper(extension_service(), app_1_->id());
   CheckNoAppMenus();
 }
 
 }  // namespace