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

google_apis/drive/drive_api_parser.h

Index: google_apis/drive/drive_api_parser.h
diff --git a/google_apis/drive/drive_api_parser.h b/google_apis/drive/drive_api_parser.h
index babb4cdc5c16aa737548cca079e136ee146d6905..bbff44a2de21d3ea9f9ad7696a018d2dbf84cd80 100644
--- a/google_apis/drive/drive_api_parser.h
+++ b/google_apis/drive/drive_api_parser.h
@@ -485,6 +485,10 @@ class FileResource {
   // Returns the 'shared' attribute of the file.
   bool shared() const { return shared_; }
 
+  // Returns the short-lived download URL for the file. This field exists
+  // only when the file content is stored in Drive.
+  const GURL& download_url() const { return download_url_; }
+
   // Returns MD5 checksum of this file.
   const std::string& md5_checksum() const { return md5_checksum_; }
 
@@ -536,6 +540,9 @@ class FileResource {
   void set_shared(bool shared) {
     shared_ = shared;
   }
+  void set_download_url(const GURL& download_url) {
+    download_url_ = download_url;
+  }
   void set_md5_checksum(const std::string& md5_checksum) {
     md5_checksum_ = md5_checksum;
   }
@@ -570,6 +577,7 @@ class FileResource {
   base::Time last_viewed_by_me_date_;
   base::Time shared_with_me_date_;
   bool shared_;
+  GURL download_url_;
   std::string md5_checksum_;
   int64 file_size_;
   GURL alternate_link_;