base: Use std::move() instead of Pass() for real movable types.

base/containers/scoped_ptr_map.h

Index: base/containers/scoped_ptr_map.h
diff --git a/base/containers/scoped_ptr_map.h b/base/containers/scoped_ptr_map.h
index dfa26f4febeaf8d5a16570caaf93852419bc9bb2..822cbfd0ebd12a215d967c9aa582cacc21cd8344 100644
--- a/base/containers/scoped_ptr_map.h
+++ b/base/containers/scoped_ptr_map.h
@@ -116,7 +116,7 @@ class ScopedPtrMap {
     ScopedPtr ret(position->second);
     // Key-based lookup (cannot use const_iterator overload in C++03 library).
     data_.erase(position->first);
-    return ret.Pass();
+    return ret;
   }
 
   // Like |erase()|, but returns the element instead of deleting it.
@@ -127,7 +127,7 @@ class ScopedPtrMap {
 
     ScopedPtr ret(it->second);
     data_.erase(it);
-    return ret.Pass();
+    return ret;
   }
 
  private: