Bug 263276 - copy changes to toolkit/content/customizeToolbar.xul. r=rlk, a=asa

toolkit/components/help/content/customizeToolbar.xul

@@ -43,6 +43,12 @@
 
 <stringbundle id="stringBundle" src="chrome://global/locale/customizeToolbar.properties"/>
 
+<keyset>
+  <key id="cmd_close_sheet" keycode="VK_ESCAPE" oncommand="onAccept();"/>
+  <key id="cmd_close_sheet" keycode="VK_RETURN" oncommand="onAccept();"/>
+  <key id="cmd_close_sheet" keycode="VK_ENTER" oncommand="onAccept();"/>
+</keyset>
+
 <vbox id="main-box" flex="1" collapsed="true">
   <description id="instructions">
   &instructions.description;