This adds a webui overlay on the extensions page for showing what Extension keybindings are active.…

chrome/browser/ui/gtk/browser_actions_toolbar_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 363 matching lines @@
     BrowserActionButton* button = static_cast<BrowserActionButton*>(user_data);
     button->ConnectBrowserActionPopupAccelerator();
   }
 
   // Connect the accelerator for the browser action popup.
   void ConnectBrowserActionPopupAccelerator() {
     ExtensionCommandService* command_service =
         ExtensionCommandServiceFactory::GetForProfile(
             toolbar_->browser()->profile());
     const extensions::Command* command =
-        command_service->GetActiveBrowserActionCommand(extension_->id());
+        command_service->GetBrowserActionCommand(extension_->id(),
+        ExtensionCommandService::ACTIVE_ONLY);
     if (command) {
       // Found the browser action shortcut command, register it.
       keybinding_.reset(new ui::AcceleratorGtk(
           command->accelerator().key_code(),
           command->accelerator().IsShiftDown(),
           command->accelerator().IsCtrlDown(),
           command->accelerator().IsAltDown()));
 
       gfx::NativeWindow window =
           toolbar_->browser()->window()->GetNativeHandle();
@@ skipping 684 matching lines @@
 
   menu->PopupAsContext(gfx::Point(event->x_root, event->y_root),
                        event->time);
   return TRUE;
 }
 
 void BrowserActionsToolbarGtk::OnButtonShowOrHide(GtkWidget* sender) {
   if (!resize_animation_.is_animating())
     UpdateChevronVisibility();
 }