Committing issue 484006 for feldstein.
Refactor close button to its own class.

BUG= 23641
TEST= see http://codereview.chromium.org/484006

Review URL: http://codereview.chromium.org/501003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34556 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index bd6b007..a5ce56e 100755
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -435,6 +435,8 @@
         'browser/cocoa/history_menu_bridge.mm',
         'browser/cocoa/history_menu_cocoa_controller.h',
         'browser/cocoa/history_menu_cocoa_controller.mm',
+        'browser/cocoa/hover_close_button.h',
+        'browser/cocoa/hover_close_button.mm',
         'browser/cocoa/html_dialog_window_controller.h',
         'browser/cocoa/html_dialog_window_controller_cppsafe.h',
         'browser/cocoa/html_dialog_window_controller.mm',