Add more missing closing namespace comments.

third_party/WebKit/Source/core/layout/LayoutPartTest.cpp

 // Copyright 2014 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/LayoutPart.h"
 
 #include "core/html/HTMLElement.h"
 #include "core/layout/ImageQualityController.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 14 matching lines @@
 {
     RefPtrWillBeRawPtr<Element> element = HTMLElement::create(HTMLNames::divTag, document());
     LayoutObject* part = new OverriddenLayoutPart(element.get());
     // The third and forth arguments are not important in this test.
     ImageQualityController::imageQualityController()->set(*part, 0, this, LayoutSize(1, 1));
     EXPECT_TRUE(ImageQualityController::has(*part));
     part->destroy();
     EXPECT_FALSE(ImageQualityController::has(*part));
 }
 
-}
+} // namespace blink