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

chrome/browser/ui/cocoa/apps/native_app_window_cocoa_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/native_app_window_cocoa.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "apps/shell_window_registry.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
+#include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
 
 using extensions::PlatformAppBrowserTest;
 
 namespace {
 
 class NativeAppWindowCocoaBrowserTest : public PlatformAppBrowserTest {
  protected:
   NativeAppWindowCocoaBrowserTest() {}
@@ skipping 74 matching lines @@
   other_window->Hide();
   EXPECT_FALSE([other_ns_window isVisible]);
 
   // HideWithApp, ShowWithApp does not show the other window.
   window->HideWithApp();
   EXPECT_FALSE([ns_window isVisible]);
   window->ShowWithApp();
   EXPECT_TRUE([ns_window isVisible]);
   EXPECT_FALSE([other_ns_window isVisible]);
 }