Deprecate NonThreadSafe in components/data_reduction_proxy in favor of SequenceChecker.

components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h
index 077f0d20a1c3d2cf4364f7b314deb69777592677..040605e25ec21a3badd4abc87531b50454a102f9 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h
@@ -16,7 +16,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_metrics.h"
 #include "components/data_reduction_proxy/core/browser/db_data_owner.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_event_storage_delegate.h"
@@ -47,8 +47,7 @@ class DataUseGroup;
 // Contains and initializes all Data Reduction Proxy objects that have a
 // lifetime based on the UI thread.
 class DataReductionProxyService
-    : public base::NonThreadSafe,
-      public DataReductionProxyEventStorageDelegate {
+    : public DataReductionProxyEventStorageDelegate {
  public:
   // The caller must ensure that |settings|, |prefs|, |request_context|, and
   // |io_task_runner| remain alive for the lifetime of the
@@ -204,6 +203,8 @@ class DataReductionProxyService
 
   bool initialized_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   base::WeakPtrFactory<DataReductionProxyService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyService);