Support smart pointers in base::DispatchToMethod

base/tuple.h

Index: base/tuple.h
diff --git a/base/tuple.h b/base/tuple.h
index e73dd49c7c09d5bf9f0dd753b38e6a9eb60be072..d07d38c6031726f28308ed14648b6308e3805cb0 100644
--- a/base/tuple.h
+++ b/base/tuple.h
@@ -196,7 +196,7 @@ inline Tuple<Ts&...> MakeRefTuple(Ts&... arg) {
 // Non-Static Dispatchers with no out params.
 
 template <typename ObjT, typename Method, typename... Ts, size_t... Ns>
-inline void DispatchToMethodImpl(ObjT* obj,
+inline void DispatchToMethodImpl(const ObjT& obj,
                                  Method method,
                                  const Tuple<Ts...>& arg,
                                  IndexSequence<Ns...>) {
@@ -204,7 +204,7 @@ inline void DispatchToMethodImpl(ObjT* obj,
 }
 
 template <typename ObjT, typename Method, typename... Ts>
-inline void DispatchToMethod(ObjT* obj,
+inline void DispatchToMethod(const ObjT& obj,
                              Method method,
                              const Tuple<Ts...>& arg) {
   DispatchToMethodImpl(obj, method, arg, MakeIndexSequence<sizeof...(Ts)>());
@@ -232,7 +232,7 @@ template <typename ObjT,
           typename... OutTs,
           size_t... InNs,
           size_t... OutNs>
-inline void DispatchToMethodImpl(ObjT* obj,
+inline void DispatchToMethodImpl(const ObjT& obj,
                                  Method method,
                                  const Tuple<InTs...>& in,
                                  Tuple<OutTs...>* out,
@@ -243,7 +243,7 @@ inline void DispatchToMethodImpl(ObjT* obj,
 }
 
 template <typename ObjT, typename Method, typename... InTs, typename... OutTs>
-inline void DispatchToMethod(ObjT* obj,
+inline void DispatchToMethod(const ObjT& obj,
                              Method method,
                              const Tuple<InTs...>& in,
                              Tuple<OutTs...>* out) {