[Mac] Put buttons into the new unified Wrench menu.

This also makes changes to MenuController to support NIB-based initialization.
Screen shots: http://cl.ly/1cyU (en) and http://cl.ly/1cyE (ru).

BUG=47848
TEST=Click on Wrench menu and see buttons. Buttons perform their function.

Review URL: http://codereview.chromium.org/2923009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@52485 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index c96158db..e20589b 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -987,6 +987,8 @@
         'browser/cocoa/web_drop_target.mm',
         'browser/cocoa/window_size_autosaver.h',
         'browser/cocoa/window_size_autosaver.mm',
+        'browser/cocoa/wrench_menu_controller.h',
+        'browser/cocoa/wrench_menu_controller.mm',
         'browser/command_updater.cc',
         'browser/command_updater.h',
         'browser/config_dir_policy_provider.cc',