Replace manual casting to rvalue reference with calls to std::move

webrtc/base/scoped_ptr.h

Index: webrtc/base/scoped_ptr.h
diff --git a/webrtc/base/scoped_ptr.h b/webrtc/base/scoped_ptr.h
index db615f30895fef2c22c03ba9439453102feeb2ad..3f1a87a73c3d8b6697a4c92d6e11f2fb6cf406c8 100644
--- a/webrtc/base/scoped_ptr.h
+++ b/webrtc/base/scoped_ptr.h
@@ -374,7 +374,7 @@ class scoped_ptr {
   scoped_ptr& operator=(const scoped_ptr& other) = delete;
 
   // Get an rvalue reference. (sp.Pass() does the same thing as std::move(sp).)
-  scoped_ptr&& Pass() { return static_cast<scoped_ptr&&>(*this); }
+  scoped_ptr&& Pass() { return std::move(*this); }
 
   // Reset.  Deletes the currently owned object, if any.
   // Then takes ownership of a new object, if given.
@@ -507,7 +507,7 @@ class scoped_ptr<T[], D> {
   scoped_ptr& operator=(const scoped_ptr& other) = delete;
 
   // Get an rvalue reference. (sp.Pass() does the same thing as std::move(sp).)
-  scoped_ptr&& Pass() { return static_cast<scoped_ptr&&>(*this); }
+  scoped_ptr&& Pass() { return std::move(*this); }
 
   // Reset.  Deletes the currently owned array, if any.
   // Then takes ownership of a new object, if given.