Bug 271496 - [Mac] both delete and del keys should delete bookmarks and history items. r=mconnor a=shaver

browser/components/bookmarks/content/bookmarksManager.xul

@@ -101,6 +101,9 @@
     <key keycode="VK_ESCAPE" command="cmd_close"/>
     <key id="bm_key_find" key="&edit.find.keybinding;" modifiers="accel" command="cmd_bm_find"/>
     <key id="bm_key_properties" key="&edit.properties.keybinding;" modifiers="accel" command="cmd_bm_properties"/>
+#ifdef XP_MACOSX
+    <key id="key_delete2" keycode="VK_BACK" command="cmd_delete"/>
+#endif
   </keyset>
 
   <commandset id="baseMenuCommandSet" />

browser/components/history/content/history-panel.xul

@@ -59,7 +59,11 @@
   <stringbundle id="historyBundle" src="chrome://global/locale/history/history.properties"/>
 
   <commandset id="editMenuCommands"/>
-  <keyset id="editMenuKeys"/>
+  <keyset id="editMenuKeys">
+#ifdef XP_MACOSX
+    <key id="key_delete2" keycode="VK_BACK" command="cmd_delete"/>
+#endif
+  </keyset>
 
   <popup id="historyContextMenu" onpopupshowing="buildContextMenu(event);">
     <menuitem id="miExpand" label="&expand.label;" accesskey="&expand.accesskey;"