Change the platform app manifest structure.

chrome/common/extensions/manifest.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_MANIFEST_H_
 #define CHROME_COMMON_EXTENSIONS_MANIFEST_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 34 matching lines @@
   Extension::Type type() const { return type_; }
 
   bool is_theme() const { return type_ == Extension::TYPE_THEME; }
   bool is_platform_app() const { return type_ == Extension::TYPE_PLATFORM_APP; }
   bool is_packaged_app() const { return type_ == Extension::TYPE_PACKAGED_APP; }
   bool is_hosted_app() const { return type_ == Extension::TYPE_HOSTED_APP; }
 
   // These access the wrapped manifest value, returning false when the property
   // does not exist or if the manifest type can't access it.
   bool HasKey(const std::string& key) const;
+  bool HasPath(const std::string& path) const;
   bool Get(const std::string& path, base::Value** out_value) const;
   bool GetBoolean(const std::string& path, bool* out_value) const;
   bool GetInteger(const std::string& path, int* out_value) const;
   bool GetString(const std::string& path, std::string* out_value) const;
   bool GetString(const std::string& path, string16* out_value) const;
   bool GetDictionary(const std::string& path,
                      base::DictionaryValue** out_value) const;
   bool GetList(const std::string& path, base::ListValue** out_value) const;
 
   // Returns a new Manifest equal to this one, passing ownership to
@@ skipping 25 matching lines @@
   scoped_ptr<base::DictionaryValue> value_;
 
   Extension::Type type_;
 
   DISALLOW_COPY_AND_ASSIGN(Manifest);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_H_