Convert utility process ParseMediaMetadata IPC to mojo

chrome/browser/media_galleries/fileapi/safe_media_metadata_parser.h

 // Copyright 2014 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_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/common/extensions/api/media_galleries.h"
+#include "chrome/common/extensions/media_parser.mojom.h"
 #include "chrome/common/media_galleries/metadata_types.h"
 #include "content/public/browser/utility_process_host.h"
 #include "content/public/browser/utility_process_host_client.h"
 
 namespace IPC {
 class Message;
 }
 
 class Profile;
 
@@ skipping 27 matching lines @@
     STARTED_PARSING_STATE,
     FINISHED_PARSING_STATE,
   };
 
   // Private because content::UtilityProcessHostClient is ref-counted.
   ~SafeMediaMetadataParser() override;
 
   // Launches the utility process.  Must run on the IO thread.
   void StartWorkOnIOThread(const DoneCallback& callback);
 
-  // Notification from the utility process when it finishes parsing metadata.
+  // Mojo callback if the utility process or metadata parse requests fail.
   // Runs on the IO thread.
-  void OnParseMediaMetadataFinished(
-      bool parse_success, const base::DictionaryValue& metadata_dictionary,
+  void ParseMediaMetadataFailed();
+
+  // Mojo callback from utility process when it finishes parsing metadata.
+  // Runs on the IO thread.
+  void ParseMediaMetadataDone(
+      bool parse_success,
+      std::unique_ptr<base::DictionaryValue> metadata_dictionary,
       const std::vector<AttachedImage>& attached_images);
 
   // Sequence of functions that bounces from the IO thread to the UI thread to
   // read the blob data, then sends the data back to the utility process.
   void OnUtilityProcessRequestBlobBytes(int64_t request_id,
                                         int64_t byte_start,
                                         int64_t length);
   void StartBlobReaderOnUIThread(int64_t request_id,
                                  int64_t byte_start,
                                  int64_t length);
   void OnBlobReaderDoneOnUIThread(int64_t request_id,
                                   std::unique_ptr<std::string> data,
                                   int64_t /* blob_total_size */);
   void FinishRequestBlobBytes(int64_t request_id,
                               std::unique_ptr<std::string> data);
 
   // UtilityProcessHostClient implementation.
   // Runs on the IO thread.
-  void OnProcessCrashed(int exit_code) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // All member variables are only accessed on the IO thread.
   Profile* const profile_;
   const std::string blob_uuid_;
   const int64_t blob_size_;
   const std::string mime_type_;
   bool get_attached_images_;
 
   DoneCallback callback_;
 
   base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
 
+  extensions::mojom::MediaParserPtr interface_;
+
   // Verifies the messages from the utility process came at the right time.
   // Initialized on the UI thread, but only accessed on the IO thread.
   ParserState parser_state_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeMediaMetadataParser);
 };
 
 }  // namespace metadata
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_