Convert utility process CheckMediaFile IPC to mojo

chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h

Index: chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h
diff --git a/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h b/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h
index 2cb9b0e7f09eed8342f5fd0cd6729dd022708daf..7c7eaeb46297be1140cc6f25e0038adf60f3b08b 100644
--- a/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h
+++ b/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h
@@ -9,6 +9,7 @@
 #include "base/files/file.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "chrome/common/extensions/media_parser.mojom.h"
 #include "content/public/browser/utility_process_host_client.h"
 #include "storage/browser/fileapi/copy_or_move_file_validator.h"
 
@@ -55,6 +56,8 @@ class SafeAudioVideoChecker : public content::UtilityProcessHostClient {
 
   base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
 
+  extensions::mojom::MediaParserPtr interface_;
+
   DISALLOW_COPY_AND_ASSIGN(SafeAudioVideoChecker);
 };