Added a policy to control the visibility of the apps shortcut.

chrome/browser/ui/views/bookmarks/bookmark_bar_view.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_VIEWS_BOOKMARKS_BOOKMARK_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_VIEW_H_
 
 #include <set>
 #include <string>
 
@@ skipping 242 matching lines @@
                                       ui::MenuSourceType source_type) OVERRIDE;
 
  private:
   class ButtonSeparatorView;
   struct DropInfo;
   struct DropLocation;
 
   friend class BookmarkBarViewEventTestBase;
   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewTest, SwitchProfile);
   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewTest,
                            NoAppsShortcutWithoutInstantExtended);

[Joao da Silva, 2014/06/03 22:20:52]

FYI, this test doesn't seem to exist anymore.

   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewInstantExtendedTest,
                            AppsShortcutVisibility);
+  FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewInstantExtendedTest,
+                           ManagedShowAppsShortcutInBookmarksBar);
+

[sky, 2014/06/03 16:15:07]

nit: only one newline.

[Joao da Silva, 2014/06/03 22:20:52]

Done.

 
   // Used to identify what the user is dropping onto.
   enum DropButtonType {
     DROP_BOOKMARK,
     DROP_OTHER_FOLDER,
     DROP_OVERFLOW
   };
 
   // Creates recent bookmark button and when visible button as well as
   // calculating the preferred height.
@@ skipping 159 matching lines @@
 
   BookmarkBar::State bookmark_bar_state_;
 
   // Are we animating to or from the detached state?
   bool animating_detached_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_VIEW_H_