Provide script/gypi support for manifest generation

extensions/common/file_util.h

 // Copyright 2013 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 EXTENSIONS_COMMON_FILE_UTIL_H_
 #define EXTENSIONS_COMMON_FILE_UTIL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 43 matching lines @@
                                        const std::string& extension_id,
                                        Manifest::Location location,
                                        int flags,
                                        std::string* error);
 
 // Loads an extension manifest from the specified directory. Returns NULL
 // on failure, with a description of the error in |error|.
 base::DictionaryValue* LoadManifest(const base::FilePath& extension_root,
                                     std::string* error);
 
+// Convenience overload for specifying a manifest filename.
+base::DictionaryValue* LoadManifest(
+    const base::FilePath& extension_root,
+    const base::FilePath::CharType* manifest_filename,
+    std::string* error);
+
 // Returns true if the given extension object is valid and consistent.
 // May also append a series of warning messages to |warnings|, but they
 // should not prevent the extension from running.
 //
 // Otherwise, returns false, and a description of the error is
 // returned in |error|.
 bool ValidateExtension(const Extension* extension,
                        std::string* error,
                        std::vector<InstallWarning>* warnings);
 
@@ skipping 49 matching lines @@
     const std::string& default_locale);
 
 // Helper functions for getting paths for files used in content verification.
 base::FilePath GetVerifiedContentsPath(const base::FilePath& extension_path);
 base::FilePath GetComputedHashesPath(const base::FilePath& extension_path);
 
 }  // namespace file_util
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_FILE_UTIL_H_