Convert utility process extension Unpacker IPC to mojo

extensions/utility/unpacker.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 EXTENSIONS_UTILITY_UNPACKER_H_
 #define EXTENSIONS_UTILITY_UNPACKER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 35 matching lines @@
   // Runs the processing steps for the extension. On success, this returns true
   // and the decoded images will be in a file at
   // |working_dir|/kDecodedImagesFilename and the decoded messages will be in a
   // file at |working_dir|/kDecodedMessageCatalogsFilename.
   bool Run();
 
   const base::string16& error_message() { return error_message_; }
   base::DictionaryValue* parsed_manifest() { return parsed_manifest_.get(); }
   base::DictionaryValue* parsed_catalogs() { return parsed_catalogs_.get(); }
 
+  std::unique_ptr<base::DictionaryValue> TakeParsedManifest() {
+    return std::move(parsed_manifest_);
+  }
+
  private:
   // Write the decoded images to kDecodedImagesFilename.  We do this instead
   // of sending them over IPC, since they are so large.  Returns true on
   // success.
   bool DumpImagesToFile();
 
   // Write the decoded messages to kDecodedMessageCatalogsFilename.  We do this
   // instead of sending them over IPC, since they are so large.  Returns true on
   // success.
   bool DumpMessageCatalogsToFile();
@@ skipping 42 matching lines @@
 
   // The last error message that was set.  Empty if there were no errors.
   base::string16 error_message_;
 
   DISALLOW_COPY_AND_ASSIGN(Unpacker);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_UTILITY_UNPACKER_H_