Add #include <vector> to accelerators_gtk.h

This file uses std::vector but does not include corresponding header file.

R=erg@chromium.org
BUG=82098

Review URL: https://codereview.chromium.org/83293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236823 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/gtk/accelerators_gtk.h

@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_UI_GTK_ACCELERATORS_GTK_H_
 #define CHROME_BROWSER_UI_GTK_ACCELERATORS_GTK_H_
 
+#include <vector>
+
 #include "base/containers/hash_tables.h"
 #include "ui/base/accelerators/accelerator.h"