Removed calls to RefPtr::Release in return statements with auto move.

third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/offscreencanvas/OffscreenCanvas.h"
 
 #include <memory>
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fileapi/Blob.h"
@@ skipping 112 matching lines @@
   if (!size.Width() || !size.Height()) {
     *status = kZeroSizeCanvasSourceImageStatus;
     return nullptr;
   }
   RefPtr<Image> image = context_->GetImage(hint, reason);
   if (!image) {
     *status = kInvalidSourceImageStatus;
   } else {
     *status = kNormalSourceImageStatus;
   }
-  return image.Release();
+  return image;
 }
 
 IntSize OffscreenCanvas::BitmapSourceSize() const {
   return size_;
 }
 
 ScriptPromise OffscreenCanvas::CreateImageBitmap(
     ScriptState* script_state,
     EventTarget&,
     Optional<IntRect> crop_rect,
@@ skipping 265 matching lines @@
 }
 
 DEFINE_TRACE(OffscreenCanvas) {
   visitor->Trace(context_);
   visitor->Trace(execution_context_);
   visitor->Trace(commit_promise_resolver_);
   EventTargetWithInlineData::Trace(visitor);
 }
 
 }  // namespace blink