Add base_url to DriveApiUrlGenerator.

chrome/browser/chromeos/drive/drive_api_service.cc

Index: chrome/browser/chromeos/drive/drive_api_service.cc
diff --git a/chrome/browser/chromeos/drive/drive_api_service.cc b/chrome/browser/chromeos/drive/drive_api_service.cc
index 18348fa2efd921fed6a9219ce22d96079c73fc53..0b8ab6643d39ae0b9bde4d7082c345ac01a6255b 100644
--- a/chrome/browser/chromeos/drive/drive_api_service.cc
+++ b/chrome/browser/chromeos/drive/drive_api_service.cc
@@ -122,10 +122,12 @@ void ParseAccounetMetadataAndRun(
 
 DriveAPIService::DriveAPIService(
     net::URLRequestContextGetter* url_request_context_getter,
+    const GURL& base_url,
     const std::string& custom_user_agent)
     : url_request_context_getter_(url_request_context_getter),
       profile_(NULL),
       runner_(NULL),
+      url_generator_(base_url),
       custom_user_agent_(custom_user_agent) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }