Network traffic annotation added to drive/base_requests.

google_apis/drive/request_sender.h

Index: google_apis/drive/request_sender.h
diff --git a/google_apis/drive/request_sender.h b/google_apis/drive/request_sender.h
index 6fb7437a00690d5d66a9b34f3e460648ca2a364d..c5705e6a5905c9d18ee9954aa74703be920fcf3c 100644
--- a/google_apis/drive/request_sender.h
+++ b/google_apis/drive/request_sender.h
@@ -15,6 +15,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "google_apis/drive/drive_api_error_codes.h"
+#include "net/traffic_annotation/network_traffic_annotation.h"
 
 namespace base {
 class SequencedTaskRunner;
@@ -48,7 +49,8 @@ class RequestSender {
       AuthServiceInterface* auth_service,
       net::URLRequestContextGetter* url_request_context_getter,
       const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner,
-      const std::string& custom_user_agent);
+      const std::string& custom_user_agent,
+      const net::NetworkTrafficAnnotationTag& traffic_annotation);
   ~RequestSender();
 
   AuthServiceInterface* auth_service() { return auth_service_.get(); }
@@ -74,6 +76,11 @@ class RequestSender {
   // TODO(kinaba): refactor the life time management and make this at private.
   void RequestFinished(AuthenticatedRequestInterface* request);
 
+  // Returns traffic annotation tag asssigned to this object.
+  const net::NetworkTrafficAnnotationTag& get_traffic_annotation_tag() const {
+    return traffic_annotation_;
+  }
+
  private:
   base::Closure StartRequestWithAuthRetryInternal(
       AuthenticatedRequestInterface* request);
@@ -102,6 +109,8 @@ class RequestSender {
 
   base::ThreadChecker thread_checker_;
 
+  const net::NetworkTrafficAnnotationTag traffic_annotation_;
+
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<RequestSender> weak_ptr_factory_;