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

webrtc/base/buffer.h

 /*
  *  Copyright 2004 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 154 matching lines @@
     scoped_ptr<uint8_t[]> new_data(new uint8_t[capacity]);
     std::memcpy(new_data.get(), data_.get(), size_);
     data_ = std::move(new_data);
     capacity_ = capacity;
     assert(IsConsistent());
   }
 
   // b.Pass() does the same thing as std::move(b).
   Buffer&& Pass() {
     assert(IsConsistent());
-    return static_cast<Buffer&&>(*this);
+    return std::move(*this);
   }
 
   // Resets the buffer to zero size and capacity. Works even if the buffer has
   // been moved from.
   void Clear() {
     data_.reset();
     size_ = 0;
     capacity_ = 0;
     assert(IsConsistent());
   }
@@ skipping 31 matching lines @@
   }
 
   size_t size_;
   size_t capacity_;
   scoped_ptr<uint8_t[]> data_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_BUFFER_H_