Fix clang/win build more after https://codereview.chromium.org/1471123002

mojo/edk/system/parent_token_serializer_state_win.h

Index: mojo/edk/system/parent_token_serializer_state_win.h
diff --git a/mojo/edk/system/parent_token_serializer_state_win.h b/mojo/edk/system/parent_token_serializer_state_win.h
index d16a368d900623f8839ec411032f64dab7f1ac80..c1db1cfc10f8e8decfdc694164eeaa98efd279e6 100644
--- a/mojo/edk/system/parent_token_serializer_state_win.h
+++ b/mojo/edk/system/parent_token_serializer_state_win.h
@@ -6,7 +6,7 @@
 #define MOJO_EDK_SYSTEM_PARENT_TOKEN_SERIALIZER_STATE_WIN_H_
 
 #include "base/compiler_specific.h"
-#include "base/containers/hash_tables.h"
+#include "base/containers/hash_tables.h"
 #include "base/memory/singleton.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
@@ -22,7 +22,7 @@ namespace edk {
 // TokenSerializer interface for use by code in the parent process.
 class MOJO_SYSTEM_IMPL_EXPORT ParentTokenSerializerState
     : NON_EXPORTED_BASE(public TokenSerializer) {
- public:
+ public:
   static ParentTokenSerializerState* GetInstance();
 
   // TokenSerializer implementation.
@@ -39,11 +39,11 @@ class MOJO_SYSTEM_IMPL_EXPORT ParentTokenSerializerState
     return token_serialize_thread_.task_runner();
   }
 
- private:
+ private:
   friend struct base::DefaultSingletonTraits<ParentTokenSerializerState>;
 
   ParentTokenSerializerState();
-  virtual ~ParentTokenSerializerState();
+  ~ParentTokenSerializerState() override;
 
   // A separate thread to handle sync IPCs from child processes for exchanging
   // platform handles with tokens. We use a separate thread because latency is