Fix no-compile base_unittests for base::Pass() -> std::move conversion

base/callback_list_unittest.nc

Index: base/callback_list_unittest.nc
diff --git a/base/callback_list_unittest.nc b/base/callback_list_unittest.nc
index 45ac994f23906f768ceb6d3b449aa6333b0c8ff6..ef193f4ee368728c257fdf9bd8f6c1427de728a9 100644
--- a/base/callback_list_unittest.nc
+++ b/base/callback_list_unittest.nc
@@ -7,6 +7,8 @@
 
 #include "base/callback_list.h"
 
+#include <utility>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
@@ -24,7 +26,7 @@ class FooListener {
  public:
   FooListener() {}
 
-  void GotAScopedFoo(scoped_ptr<Foo> f) { foo_ = f.Pass(); }
+  void GotAScopedFoo(scoped_ptr<Foo> f) { foo_ = std::move(f); }
 
   scoped_ptr<Foo> foo_;