Add DriveApiUrlGenerator.

chrome/browser/chromeos/drive/drive_api_service.h

Index: chrome/browser/chromeos/drive/drive_api_service.h
diff --git a/chrome/browser/chromeos/drive/drive_api_service.h b/chrome/browser/chromeos/drive/drive_api_service.h
index a02fcb1fcea8295ff1f6041836c769b4219b1bcd..55b582c27a3329f5b9eb2bc17fae6198b1c88093 100644
--- a/chrome/browser/chromeos/drive/drive_api_service.h
+++ b/chrome/browser/chromeos/drive/drive_api_service.h
@@ -11,6 +11,7 @@
 #include "base/observer_list.h"
 #include "chrome/browser/google_apis/auth_service.h"
 #include "chrome/browser/google_apis/auth_service_observer.h"
+#include "chrome/browser/google_apis/drive_api_url_generator.h"
 #include "chrome/browser/google_apis/drive_service_interface.h"
 
 class FilePath;
@@ -154,6 +155,7 @@ class DriveAPIService : public google_apis::DriveServiceInterface,
   Profile* profile_;
   scoped_ptr<google_apis::OperationRunner> runner_;
   ObserverList<google_apis::DriveServiceObserver> observers_;
+  google_apis::DriveApiUrlGenerator url_generator_;
   const std::string custom_user_agent_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveAPIService);