Add enable-app-shims to chrome://flags.

chrome/common/chrome_switches.h

 // 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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 404 matching lines @@
 #if defined(OS_POSIX)
 extern const char kEnableCrashReporter[];
 extern const char kEnableCrashReporterForTesting[];
 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
 extern const char kPasswordStore[];
 #endif
 #endif
 
 #if defined(OS_MACOSX)
 extern const char kEnableAppListShim[];
+extern const char kEnableAppShims[];
 extern const char kEnableExposeForTabs[];
 extern const char kKeychainReauthorize[];
 extern const char kRelauncherProcess[];
 extern const char kUseMockKeychain[];
 #endif
 
 #if defined(OS_WIN)
 extern const char kDisableAppList[];
 extern const char kEnableAppList[];
 extern const char kForceImmersive[];
@@ skipping 14 matching lines @@
 #else
 extern const char kEnablePrintPreview[];
 #endif
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_