Added webdriver support for App v2.

chrome/common/automation_id.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_COMMON_AUTOMATION_ID_H_
 #define CHROME_COMMON_AUTOMATION_ID_H_
 
 #include <string>
 
 namespace base {
@@ skipping 10 matching lines @@
 class AutomationId {
  public:
   // The value of each entry should be preserved.
   enum Type {
     kTypeInvalid = 0,
     kTypeTab,
     kTypeExtensionPopup,
     kTypeExtensionBgPage,
     kTypeExtensionInfobar,
     kTypeExtension,
+    kTypeAppShell,
   };
 
   static bool FromValue(
       base::Value* value, AutomationId* id, std::string* error);
   static bool FromValueInDictionary(
       base::DictionaryValue* dict, const std::string& key, AutomationId* id,
       std::string* error);
 
   // Constructs an invalid ID.
   AutomationId();
@@ skipping 11 matching lines @@
 
   Type type() const;
   const std::string& id() const;
 
  private:
   Type type_;
   std::string id_;
 };
 
 #endif  // CHROME_COMMON_AUTOMATION_ID_H_