Deprecate NonThreadSafe in components/drive in favor of SequenceChecker.

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 b83e0b06c49db3d0beec3dba9447da20c82f2a2c..78d8092c2d8204c5a95ea741930b77cb4331e773 100644
--- a/components/drive/service/drive_api_service.h
+++ b/components/drive/service/drive_api_service.h
@@ -14,6 +14,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
+#include "base/sequence_checker.h"
 #include "base/threading/thread_checker.h"
 #include "components/drive/service/drive_service_interface.h"
 #include "google_apis/drive/auth_service_interface.h"
@@ -44,8 +45,7 @@ class URLRequestContextGetter;
 namespace drive {
 
 // Builder for batch request returned by |DriveAPIService|.
-class BatchRequestConfigurator : public BatchRequestConfiguratorInterface,
-                                 public base::NonThreadSafe {
+class BatchRequestConfigurator : public BatchRequestConfiguratorInterface {
  public:
   BatchRequestConfigurator(
       const base::WeakPtr<google_apis::drive::BatchUploadRequest>&
@@ -82,6 +82,8 @@ class BatchRequestConfigurator : public BatchRequestConfiguratorInterface,
   google_apis::DriveApiUrlGenerator url_generator_;
   google_apis::CancelCallback cancel_callback_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(BatchRequestConfigurator);
 };