gdata: Fix "save as pdf" to work on Google Drive.

chrome/browser/chromeos/gdata/gdata_system_service.h

Index: chrome/browser/chromeos/gdata/gdata_system_service.h
diff --git a/chrome/browser/chromeos/gdata/gdata_system_service.h b/chrome/browser/chromeos/gdata/gdata_system_service.h
index 070fa7718f69a685734624768f5d04ef599ca758..a592f61ed3f132506566fec7c84054a86da028f1 100644
--- a/chrome/browser/chromeos/gdata/gdata_system_service.h
+++ b/chrome/browser/chromeos/gdata/gdata_system_service.h
@@ -23,6 +23,7 @@ class GDataCache;
 class GDataContactsService;
 class GDataDownloadObserver;
 class GDataFileSystemInterface;
+class GDataFileWriting;
 class GDataSyncClient;
 class GDataUploader;
 
@@ -37,6 +38,7 @@ class GDataSystemService : public ProfileKeyedService  {
   DocumentsServiceInterface* docs_service() { return documents_service_.get(); }
   GDataCache* cache() { return cache_; }
   GDataFileSystemInterface* file_system() { return file_system_.get(); }
+  GDataFileWriting* file_writing() { return file_writing_.get(); }
   GDataUploader* uploader() { return uploader_.get(); }
   GDataContactsService* contacts_service() { return contacts_service_.get(); }
   DriveWebAppsRegistry* webapps_registry() { return webapps_registry_.get(); }
@@ -67,6 +69,7 @@ class GDataSystemService : public ProfileKeyedService  {
   scoped_ptr<GDataUploader> uploader_;
   scoped_ptr<DriveWebAppsRegistry> webapps_registry_;
   scoped_ptr<GDataFileSystemInterface> file_system_;
+  scoped_ptr<GDataFileWriting> file_writing_;
   scoped_ptr<GDataDownloadObserver> download_observer_;
   scoped_ptr<GDataSyncClient> sync_client_;
   scoped_ptr<GDataContactsService> contacts_service_;