Bug 892168 - Ctrl+Shift+I/Cmd+Opt+I should toggle the devtools open/closed

browser/base/content/browser-sets.inc

@@ -273,6 +273,16 @@
         modifiers="accel,shift"
 #endif
     />
+
+    <key id="key_devToolboxMenuItem" keycode="&devToolboxMenuItem.keycode;"
+         keytext="&devToolboxMenuItem.keytext;" command="Tools:DevToolbox" key="&devToolboxMenuItem.keytext;"
+#ifdef XP_MACOSX
+        modifiers="accel,alt"
+#else
+        modifiers="accel,shift"
+#endif
+    />
+
     <key id="key_scratchpad" keycode="&scratchpad.keycode;" modifiers="shift"
          keytext="&scratchpad.keytext;" command="Tools:Scratchpad"/>
     <key id="openFileKb" key="&openFileCmd.commandkey;" command="Browser:OpenFile"  modifiers="accel"/>

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

@@ -254,6 +254,8 @@ These should match what Safari and other Apple applications use on OS X Lion. --
 <!ENTITY devToolbar.keytext                "F2">
 <!ENTITY devToolboxMenuItem.label          "Toggle Tools">
 <!ENTITY devToolboxMenuItem.accesskey      "T">
+<!ENTITY devToolboxMenuItem.keycode        "I">
+<!ENTITY devToolboxMenuItem.keytext        "I">
 
 <!ENTITY devToolbarToolsButton.tooltip     "Toggle developer tools">
 <!ENTITY devToolbarOtherToolsButton.label  "More Tools">