WIP: base::Bind for rvalue references.

base/template_util.h

Index: base/template_util.h
diff --git a/base/template_util.h b/base/template_util.h
index 83fa322a67226d512b6a6b3974b76637ee2ffbc7..27e540a9c51b38cc72268c8abcc54a84f78064a9 100644
--- a/base/template_util.h
+++ b/base/template_util.h
@@ -6,6 +6,7 @@
 #define BASE_TEMPLATE_UTIL_H_
 
 #include <cstddef>  // For size_t.
+#include <type_traits>
 
 #include "build/build_config.h"
 
@@ -56,6 +57,18 @@ template <class T> struct is_const<const T> : true_type {};
 template <class T> struct is_void : false_type {};
 template <> struct is_void<void> : true_type {};
 
+template <typename T>
+struct is_move_constructible : public std::is_constructible<T, T&&> {};
+
+template <typename T>
+struct is_copy_constructible : public std::is_constructible<T, const T&> {};
+
+template <typename T>
+struct is_move_only
+    : public std::conditional<!is_copy_constructible<T>::value,
+                              typename is_move_constructible<T>::type,
+                              std::false_type>::type {};
+
 namespace internal {
 
 // Types YesType and NoType are guaranteed such that sizeof(YesType) <