Add UninstallApp() method to DriveAPIService interface.

chrome/browser/drive/drive_api_service.h

Index: chrome/browser/drive/drive_api_service.h
diff --git a/chrome/browser/drive/drive_api_service.h b/chrome/browser/drive/drive_api_service.h
index 29932bb807534351de7693545351194c1c861594..580341e3128e41fd4387fa26e1ccef0ab0782583 100644
--- a/chrome/browser/drive/drive_api_service.h
+++ b/chrome/browser/drive/drive_api_service.h
@@ -177,6 +177,9 @@ class DriveAPIService : public DriveServiceInterface,
       const std::string& resource_id,
       const std::string& app_id,
       const google_apis::AuthorizeAppCallback& callback) OVERRIDE;
+  virtual google_apis::CancelCallback UninstallApp(
+      const std::string& app_id,
+      const google_apis::EntryActionCallback& callback) OVERRIDE;
   virtual google_apis::CancelCallback GetResourceListInDirectoryByWapi(
       const std::string& directory_resource_id,
       const google_apis::GetResourceListCallback& callback) OVERRIDE;