Give platform apps control over launcher right-click context menu.

chrome/browser/ui/ash/launcher/chrome_launcher_controller.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/ash/launcher/chrome_launcher_controller.h"
 
 #include <set>
 #include <vector>
 
 #include "ash/launcher/launcher_model.h"
@@ skipping 386 matching lines @@
     const std::string& app_id) {
   for (IDToItemControllerMap::const_iterator i =
            id_to_item_controller_map_.begin();
        i != id_to_item_controller_map_.end(); ++i) {
     if (i->second->app_id() == app_id)
       return i->first;
   }
   return 0;
 }
 
+std::string ChromeLauncherController::GetAppIDForLauncherID(
+    ash::LauncherID id) {
+  DCHECK(id_to_item_controller_map_.find(id) !=
+      id_to_item_controller_map_.end());
+  return id_to_item_controller_map_[id]->app_id();
+}
+
 void ChromeLauncherController::SetAppImage(const std::string& id,
                                            const gfx::ImageSkia& image) {
   // TODO: need to get this working for shortcuts.
 
   for (IDToItemControllerMap::const_iterator i =
            id_to_item_controller_map_.begin();
        i != id_to_item_controller_map_.end(); ++i) {
     if (i->second->app_id() != id)
       continue;
 
@@ skipping 564 matching lines @@
   if (current_tab) {
     content::NavigationEntry* active_entry =
         current_tab->GetController().GetActiveEntry();
     if (active_entry &&
         active_entry->GetURL() == GURL(chrome::kChromeUINewTabURL))
       return true;
   }
   return false;
 }