Update from https://crrev.com/306655

base/bind_internal.h.pump

 $$ This is a pump file for generating file templates.  Pump is a python
 $$ script that is part of the Google Test suite of utilities.  Description
 $$ can be found here:
 $$
 $$ http://code.google.com/p/googletest/wiki/PumpManual
 $$
 
 $$ See comment for MAX_ARITY in base/bind.h.pump.
 $var MAX_ARITY = 7
 $range ARITY 0..MAX_ARITY
@@ skipping 62 matching lines @@
 //                    Handle the differing syntaxes needed for WeakPtr<> support,
 //                    and for ignoring return values.  This is separate from
 //                    Invoker to avoid creating multiple version of Invoker<>
 //                    which grows at O(n^2) with the arity.
 //  Invoker<> -- Unwraps the curried parameters and executes the Runnable.
 //               There are |(ARITY^2 + ARITY)/2| Invoketypes.
 //  BindState<> -- Stores the curried parameters, and is the main entry point
 //                 into the Bind() system, doing most of the type resolution.
 //                 There are ARITY BindState types.
 
+// HasNonConstReferenceParam selects true_type when any of the parameters in
+// |Sig| is a non-const reference.
+// Implementation note: This non-specialized case handles zero-arity case only.
+// Non-zero-arity cases should be handled by the specialization below.
+template <typename Sig>
+struct HasNonConstReferenceParam : false_type {};
+
+// Implementation note: Select true_type if the first parameter is a non-const
+// reference.  Otherwise, skip the first parameter and check rest of parameters
+// recursively.
+template <typename R, typename T, typename... Args>
+struct HasNonConstReferenceParam<R(T, Args...)>
+    : SelectType<is_non_const_reference<T>::value,
+                 true_type,
+                 HasNonConstReferenceParam<R(Args...)>>::Type {};
+
+// HasRefCountedTypeAsRawPtr selects true_type when any of the |Args| is a raw
+// pointer to a RefCounted type.
+// Implementation note: This non-specialized case handles zero-arity case only.
+// Non-zero-arity cases should be handled by the specialization below.
+template <typename... Args>
+struct HasRefCountedTypeAsRawPtr : false_type {};
+
+// Implementation note: Select true_type if the first parameter is a raw pointer
+// to a RefCounted type. Otherwise, skip the first parameter and check rest of
+// parameters recursively.
+template <typename T, typename... Args>
+struct HasRefCountedTypeAsRawPtr<T, Args...>
+    : SelectType<NeedsScopedRefptrButGetsRawPtr<T>::value,
+                 true_type,
+                 HasRefCountedTypeAsRawPtr<Args...>>::Type {};
+
+// BindsArrayToFirstArg selects true_type when |is_method| is true and the first
+// item of |Args| is an array type.
+// Implementation note: This non-specialized case handles !is_method case and
+// zero-arity case only.  Other cases should be handled by the specialization
+// below.
+template <bool is_method, typename... Args>
+struct BindsArrayToFirstArg : false_type {};
+
+template <typename T, typename... Args>
+struct BindsArrayToFirstArg<true, T, Args...> : is_array<T> {};
+
+// HasRefCountedParamAsRawPtr is the same to HasRefCountedTypeAsRawPtr except
+// when |is_method| is true HasRefCountedParamAsRawPtr skips the first argument.
+// Implementation note: This non-specialized case handles !is_method case and
+// zero-arity case only.  Other cases should be handled by the specialization
+// below.
+template <bool is_method, typename... Args>
+struct HasRefCountedParamAsRawPtr : HasRefCountedTypeAsRawPtr<Args...> {};
+
+template <typename T, typename... Args>
+struct HasRefCountedParamAsRawPtr<true, T, Args...>
+    : HasRefCountedTypeAsRawPtr<Args...> {};
+
 // RunnableAdapter<>
 //
 // The RunnableAdapter<> templates provide a uniform interface for invoking
 // a function pointer, method pointer, or const method pointer. The adapter
 // exposes a Run() method with an appropriate signature. Using this wrapper
 // allows for writing code that supports all three pointer types without
 // undue repetition.  Without it, a lot of code would need to be repeated 3
 // times.
 //
 // For method pointers and const method pointers the first argument to Run()
@@ skipping 357 matching lines @@
 
 ]]
 };
 
 ]] $$ for ARITY
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_BIND_INTERNAL_H_