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

webrtc/base/scoped_ptr.h

 /*
  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 356 matching lines @@
   scoped_ptr& operator=(std::nullptr_t) {
     reset();
     return *this;
   }
 
   // Deleted copy constructor and copy assignment, to make the type move-only.
   scoped_ptr(const scoped_ptr& other) = delete;
   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.
   void reset(element_type* p = nullptr) { impl_.reset(p); }
 
   // Accessors to get the owned object.
   // operator* and operator-> will assert() if there is no current object.
   element_type& operator*() const {
     assert(impl_.get() != nullptr);
     return *impl_.get();
@@ skipping 112 matching lines @@
   scoped_ptr& operator=(std::nullptr_t) {
     reset();
     return *this;
   }
 
   // Deleted copy constructor and copy assignment, to make the type move-only.
   scoped_ptr(const scoped_ptr& other) = delete;
   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.
   void reset(element_type* array = nullptr) { impl_.reset(array); }
 
   // Accessors to get the owned array.
   element_type& operator[](size_t i) const {
     assert(impl_.get() != nullptr);
     return impl_.get()[i];
   }
@@ skipping 91 matching lines @@
 
 // A function to convert T* into scoped_ptr<T>
 // Doing e.g. make_scoped_ptr(new FooBarBaz<type>(arg)) is a shorter notation
 // for scoped_ptr<FooBarBaz<type> >(new FooBarBaz<type>(arg))
 template <typename T>
 rtc::scoped_ptr<T> rtc_make_scoped_ptr(T* ptr) {
   return rtc::scoped_ptr<T>(ptr);
 }
 
 #endif  // #ifndef WEBRTC_BASE_SCOPED_PTR_H__