[Mac] Integrate divider into browser-action overflow chevron.

Divider shows when the mouse is not hovering.

BUG=50575
TEST=divider shows when the mouse is not hovering.

Review URL: http://codereview.chromium.org/3014049

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54843 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index e28989b..26fdd50 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -806,6 +806,10 @@
         'browser/cocoa/extensions/browser_actions_container_view.mm',
         'browser/cocoa/extensions/browser_actions_controller.h',
         'browser/cocoa/extensions/browser_actions_controller.mm',
+        'browser/cocoa/extensions/chevron_menu_button.h',
+        'browser/cocoa/extensions/chevron_menu_button.mm',
+        'browser/cocoa/extensions/chevron_menu_button_cell.h',
+        'browser/cocoa/extensions/chevron_menu_button_cell.mm',
         'browser/cocoa/extensions/extension_action_context_menu.h',
         'browser/cocoa/extensions/extension_action_context_menu.mm',
         'browser/cocoa/extensions/extension_infobar_controller.h',