Convert Media Galleries to use base::File

chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc

Index: chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc
diff --git a/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc b/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc
index f6b4f78001b34674b5f3facbb20557b6cc9ca780..add758b63e09df8b4a9e159e2e0dc78584808ff8 100644
--- a/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc
+++ b/chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc
@@ -34,7 +34,7 @@ void SafeAudioVideoChecker::Start() {
 
   DCHECK(file_closer_);
   if (*file_closer_.get() == base::kInvalidPlatformFileValue) {
-    callback_.Run(base::PLATFORM_FILE_ERROR_SECURITY);
+    callback_.Run(base::File::FILE_ERROR_SECURITY);
     state_ = FINISHED_STATE;
     return;
   }
@@ -69,8 +69,8 @@ void SafeAudioVideoChecker::OnCheckingFinished(bool valid) {
     return;
   state_ = FINISHED_STATE;
 
-  callback_.Run(valid ? base::PLATFORM_FILE_OK
-                      : base::PLATFORM_FILE_ERROR_SECURITY);
+  callback_.Run(valid ? base::File::FILE_OK :
+                        base::File::FILE_ERROR_SECURITY);
 }
 
 void SafeAudioVideoChecker::OnProcessCrashed(int exit_code) {