Removes --enable-stacked-tab-strip flag (Stacked Tabs)

chrome/browser/ui/tabs/tab_strip_layout_type_prefs.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.
 
 #ifndef CHROME_BROWSER_UI_TABS_TAB_STRIP_LAYOUT_TYPE_PREFS_H_
 #define CHROME_BROWSER_UI_TABS_TAB_STRIP_LAYOUT_TYPE_PREFS_H_
 
 class PrefRegistrySimple;
+class PrefService;
 
 namespace chrome {
+namespace tab_strip_layout_type_prefs {

[Peter Kasting, 2014/05/23 22:38:43]

Why do we need another namespace?  We shouldn't have nested namespaces in
Chromium code in any case.

Frankly, we're trying to kill the chrome:: namespace as well, so I'd remove both
these namespaces.

[varkha, 2014/05/23 22:50:56]

Code moved so this namespace is not necessary.

 
-// Register local state preferences specific to the TabStrip.
-void RegisterTabStripLayoutTypePrefs(PrefRegistrySimple* registry);
+// Registers local state preferences specific to the TabStrip.
+void RegisterPrefs(PrefRegistrySimple* registry);
 
+// Converts possibly existing value for tabstrip layout type into a boolean
+// value indicating stacked layout preference.
+void MigratePrefs(PrefService* pref);
+
+}  // namespace tab_strip_layout_type_prefs
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_TABS_TAB_STRIP_LAYOUT_TYPE_PREFS_H_