Remove unreleased web app frame code from ChromeOS

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 the shared command-line switches used by code in the Chrome
 // directory that don't have anywhere more specific to go.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 
@@ skipping 124 matching lines @@
 extern const char kEnableQuic[];
 extern const char kEnableSaveAsMenuLabelExperiment[];
 extern const char kEnableSettingsWindow[];
 extern const char kEnableSiteEngagementAppBanner[];
 extern const char kEnableSiteEngagementEvictionPolicy[];
 extern const char kEnableSiteSettings[];
 extern const char kEnableSupervisedUserManagedBookmarksFolder[];
 extern const char kEnableTabAudioMuting[];
 extern const char kEnableThumbnailRetargeting[];
 extern const char kEnableUserAlternateProtocolPorts[];
-extern const char kEnableWebAppFrame[];
 extern const char kEnableWebNotificationCustomLayouts[];
 extern const char kEnableWebRtcEventLoggingFromExtension[];
 extern const char kExtensionContentVerification[];
 extern const char kExtensionContentVerificationBootstrap[];
 extern const char kExtensionContentVerificationEnforce[];
 extern const char kExtensionContentVerificationEnforceStrict[];
 extern const char kExtensionsInstallVerification[];
 extern const char kExtensionsNotWebstore[];
 extern const char kExtensionsUpdateFrequency[];
 extern const char kFastStart[];
@@ skipping 239 matching lines @@
 #if defined(OS_WIN)
 bool GDITextPrintingEnabled();
 #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_