Removed usage of RefPtr::Release in unit tests

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_items_builder_test.cc

 // Copyright 2016 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/layout/ng/inline/ng_inline_items_builder.h"
 
 #include "core/layout/LayoutInline.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "core/style/ComputedStyle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 namespace {
 
 static PassRefPtr<ComputedStyle> CreateWhitespaceStyle(EWhiteSpace whitespace) {
   RefPtr<ComputedStyle> style(ComputedStyle::Create());
   style->SetWhiteSpace(whitespace);
-  return style.Release();
+  return style;
 }
 
 class NGInlineItemsBuilderTest : public ::testing::Test {
  protected:
   void SetUp() override { style_ = ComputedStyle::Create(); }
 
   void SetWhiteSpace(EWhiteSpace whitespace) {
     style_->SetWhiteSpace(whitespace);
   }
 
@@ skipping 308 matching lines @@
                    u"\u2068\u202E"
                    u"\u05E2\u05D1\u05E8\u05D9\u05EA"
                    u"\u202C\u2069"
                    u" World"),
             builder.ToString());
 }
 
 }  // namespace
 
 }  // namespace blink