Place <webview> tag behind a flag.

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 163 matching lines @@
 extern const char kEnableSdch[];
 extern const char kEnableSettingsApp[];
 extern const char kEnableSpdy3[];
 extern const char kEnableSpdyCredentialFrames[];
 extern const char kEnableSpellingAutoCorrect[];
 extern const char kEnableStackedTabStrip[];
 extern const char kEnableSuggestionsTabPage[];
 extern const char kEnableTabGroupsContextMenu[];
 extern const char kEnableWatchdog[];
 extern const char kEnableWebSocketOverSpdy[];
+extern const char kEnableWebView[];
 extern const char kEventPageIdleTime[];
 extern const char kEventPageUnloadingTime[];
 extern const char kExplicitlyAllowedPorts[];
 extern const char kExtensionProcess[];
 extern const char kExtensionsUpdateFrequency[];
 extern const char kFlagSwitchesBegin[];
 extern const char kFlagSwitchesEnd[];
 extern const char kFeedbackServer[];
 extern const char kFileDescriptorLimit[];
 extern const char kFirstRun[];
@@ skipping 260 matching lines @@
 
 namespace chrome {
 
 // Returns true if the new frameless constrained window style is enabled.
 // TODO(sail): Remove this once the feature is fully baked.
 bool IsFramelessConstrainedDialogEnabled();
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_