Network traffic annotation added to drive/base_requests.

components/drive/service/drive_api_service.h

Index: components/drive/service/drive_api_service.h
diff --git a/components/drive/service/drive_api_service.h b/components/drive/service/drive_api_service.h
index 09e4390355f626183687365fb0be8b573a1688b1..ca47cbf791e041a64ef03bc6d3dc2b00b03fd7df 100644
--- a/components/drive/service/drive_api_service.h
+++ b/components/drive/service/drive_api_service.h
@@ -19,6 +19,7 @@
 #include "google_apis/drive/auth_service_interface.h"
 #include "google_apis/drive/auth_service_observer.h"
 #include "google_apis/drive/drive_api_url_generator.h"
+#include "net/traffic_annotation/network_traffic_annotation.h"
 
 class GURL;
 class OAuth2TokenService;
@@ -98,13 +99,15 @@ class DriveAPIService : public DriveServiceInterface,
   // from image server.
   // |custom_user_agent| will be used for the User-Agent header in HTTP
   // requests issues through the service if the value is not empty.
-  DriveAPIService(
-      OAuth2TokenService* oauth2_token_service,
-      net::URLRequestContextGetter* url_request_context_getter,
-      base::SequencedTaskRunner* blocking_task_runner,
-      const GURL& base_url,
-      const GURL& base_thumbnail_url,
-      const std::string& custom_user_agent);
+  // |traffic_annotation| will be used to annotate the network request that will
+  // be created to perform this service.
+  DriveAPIService(OAuth2TokenService* oauth2_token_service,
+                  net::URLRequestContextGetter* url_request_context_getter,
+                  base::SequencedTaskRunner* blocking_task_runner,
+                  const GURL& base_url,
+                  const GURL& base_thumbnail_url,
+                  const std::string& custom_user_agent,
+                  const net::NetworkTrafficAnnotationTag& traffic_annotation);
   ~DriveAPIService() override;
 
   // DriveServiceInterface Overrides
@@ -265,6 +268,7 @@ class DriveAPIService : public DriveServiceInterface,
   base::ObserverList<DriveServiceObserver> observers_;
   google_apis::DriveApiUrlGenerator url_generator_;
   const std::string custom_user_agent_;
+  const net::NetworkTrafficAnnotationTag traffic_annotation_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveAPIService);
 };