Deprecate NonThreadSafe in components/invalidation in favor of SequenceChecker.

components/invalidation/impl/invalidation_service_android.h

Index: components/invalidation/impl/invalidation_service_android.h
diff --git a/components/invalidation/impl/invalidation_service_android.h b/components/invalidation/impl/invalidation_service_android.h
index 9dd51ee31379c69c5245d2e8e747c725bc718614..d6526a1a139707830a220ab59795b177a2543eec 100644
--- a/components/invalidation/impl/invalidation_service_android.h
+++ b/components/invalidation/impl/invalidation_service_android.h
@@ -14,7 +14,7 @@
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "components/invalidation/impl/invalidation_logger.h"
 #include "components/invalidation/impl/invalidator_registrar.h"
 #include "components/invalidation/public/invalidation_service.h"
@@ -26,9 +26,7 @@ class InvalidationLogger;
 
 // This InvalidationService is used to deliver invalidations on Android.  The
 // Android operating system has its own mechanisms for delivering invalidations.
-class InvalidationServiceAndroid
-    : public base::NonThreadSafe,
-      public InvalidationService {
+class InvalidationServiceAndroid : public InvalidationService {
  public:
   explicit InvalidationServiceAndroid();
   ~InvalidationServiceAndroid() override;
@@ -87,6 +85,8 @@ class InvalidationServiceAndroid
   // and invalidations.
   InvalidationLogger logger_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(InvalidationServiceAndroid);
 };