Bug 1172320 - Browser Content Toolbox should have an accesskey. r=bgrins

browser/base/content/browser-menubar.inc

@@ -543,7 +543,8 @@
                             observes="devtoolsMenuBroadcaster_BrowserToolbox"
                             accesskey="&browserToolboxMenu.accesskey;"/>
                   <menuitem id="menu_browserContentToolbox"
-                            observes="devtoolsMenuBroadcaster_BrowserContentToolbox"/>
+                            observes="devtoolsMenuBroadcaster_BrowserContentToolbox"
+                            accesskey="&browserContentToolboxMenu.accesskey;" />
                   <menuitem id="menu_browserConsole"
                             observes="devtoolsMenuBroadcaster_BrowserConsole"
                             accesskey="&browserConsoleCmd.accesskey;"/>

browser/locales/en-US/chrome/browser/browser.dtd

@@ -275,6 +275,7 @@ These should match what Safari and other Apple applications use on OS X Lion. --
   -  application menu item that opens the browser content toolbox UI in the Tools menu.
   -  This toolbox allows to debug the chrome of the content process in multiprocess builds.  -->
 <!ENTITY browserContentToolboxMenu.label     "Browser Content Toolbox">
+<!ENTITY browserContentToolboxMenu.accesskey "x">
 
 <!ENTITY devToolbarCloseButton.tooltiptext "Close Developer Toolbar">
 <!ENTITY devToolbarMenu.label              "Developer Toolbar">