Bug 598452: add access key to "Clear Console" button, r=gavin, a=blocking

--HG--
extra : rebase_source : f656f37acba8804a98705f7d62dd72a027fd7195

toolkit/components/console/hudservice/HUDService.jsm

@@ -3254,7 +3254,9 @@ HeadsUpDisplay.prototype = {
     menuPopup.appendChild(this.makeXULNode("menuseparator"));
 
     let clearItem = this.makeXULNode("menuitem");
-    clearItem.setAttribute("label", this.getStr("itemClear"));
+    clearItem.setAttribute("label", this.getStr("clearConsoleCmd.label"));
+    clearItem.setAttribute("accesskey",
+                           this.getStr("clearConsoleCmd.accesskey"));
     clearItem.setAttribute("hudId", this.hudId);
     clearItem.setAttribute("buttonType", "clear");
     clearItem.setAttribute("oncommand", "HUDConsoleUI.command(this);");

toolkit/locales/en-US/chrome/global/headsUpDisplay.properties

@@ -33,7 +33,8 @@ tipConsoleLog=Log calls to console.log()
 btnGlobal=Global Messages
 tipGlobal=Toggle Global Message logging
 localConsole=Local Console
-itemClear=Clear Console
+clearConsoleCmd.label=Clear Console
+clearConsoleCmd.accesskey=e
 stringFilter=Filter
 close.button=Close
 close.accesskey=C