Add support for pinning platform apps

chrome/browser/ui/views/ash/launcher/launcher_context_menu.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/views/ash/launcher/launcher_context_menu.h"
 
 #include "ash/launcher/launcher_context_menu.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "chrome/browser/extensions/extension_prefs.h"
@@ skipping 36 matching lines @@
       }
     } else if (item_.type == ash::TYPE_BROWSER_SHORTCUT) {
       AddItem(MENU_NEW_WINDOW,
               l10n_util::GetStringUTF16(IDS_LAUNCHER_NEW_WINDOW));
       if (!controller_->IsLoggedInAsGuest()) {
         AddItem(MENU_NEW_INCOGNITO_WINDOW,
                 l10n_util::GetStringUTF16(IDS_LAUNCHER_NEW_INCOGNITO_WINDOW));
       }
     } else {
       AddItem(MENU_OPEN, controller->GetTitle(item_));
+      if (item_.type == ash::TYPE_PLATFORM_APP) {
+        AddItem(
+            MENU_PIN,
+            l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_PIN));
+      }
       if (controller->IsOpen(item_.id)) {
         AddItem(MENU_CLOSE,
                 l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_CLOSE));
       }
     }
     AddSeparator();
   }
   AddCheckItemWithStringId(
       MENU_AUTO_HIDE, ash::LauncherContextMenu::GetAutoHideResourceStringId());
   if (CommandLine::ForCurrentProcess()->HasSwitch(
@@ skipping 24 matching lines @@
     case MENU_AUTO_HIDE:
       return ash::LauncherContextMenu::IsAutoHideMenuHideChecked();
     default:
       return false;
   }
 }
 
 bool LauncherContextMenu::IsCommandIdEnabled(int command_id) const {
   switch (command_id) {
     case MENU_PIN:
-      return controller_->IsPinnable(item_.id);
+      return item_.type == ash::TYPE_PLATFORM_APP ||
+          controller_->IsPinnable(item_.id);
     default:
       return true;
   }
 }
 
 bool LauncherContextMenu::GetAcceleratorForCommandId(
       int command_id,
       ui::Accelerator* accelerator) {
   return false;
 }
@@ skipping 28 matching lines @@
     case MENU_NEW_WINDOW:
       controller_->CreateNewWindow();
       break;
     case MENU_NEW_INCOGNITO_WINDOW:
       controller_->CreateNewIncognitoWindow();
       break;
     case MENU_ALIGNMENT_MENU:
       break;
   }
 }