Files.app: Add an private API to get a download URL

google_apis/drive/drive_api_parser.cc

Index: google_apis/drive/drive_api_parser.cc
diff --git a/google_apis/drive/drive_api_parser.cc b/google_apis/drive/drive_api_parser.cc
index c22070eb458e5dd2a1c8c484cdcf6bfe0fe53945..f3ef9488c4b0466daa9ff47e61a178b6bb5830da 100644
--- a/google_apis/drive/drive_api_parser.cc
+++ b/google_apis/drive/drive_api_parser.cc
@@ -147,6 +147,7 @@ const char kModificationDate[] = "modificationDate";
 const char kModifiedDate[] = "modifiedDate";
 const char kLastViewedByMeDate[] = "lastViewedByMeDate";
 const char kSharedWithMeDate[] = "sharedWithMeDate";
+const char kDownloadUrl[] = "downloadUrl";
 const char kMd5Checksum[] = "md5Checksum";
 const char kFileSize[] = "fileSize";
 const char kAlternateLink[] = "alternateLink";
@@ -460,6 +461,8 @@ void FileResource::RegisterJSONConverter(
       &FileResource::shared_with_me_date_,
       &util::GetTimeFromString);
   converter->RegisterBoolField(kShared, &FileResource::shared_);
+  converter->RegisterCustomField<GURL>(
+      kDownloadUrl, &FileResource::download_url_, GetGURLFromString);
   converter->RegisterStringField(kMd5Checksum, &FileResource::md5_checksum_);
   converter->RegisterCustomField<int64>(kFileSize,
                                         &FileResource::file_size_,