Add more missing closing namespace comments.

third_party/WebKit/Source/platform/fonts/FontFallbackPriority.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 "platform/fonts/FontFallbackPriority.h"
 
 namespace blink {
 
 bool isNonTextFallbackPriority(FontFallbackPriority fallbackPriority)
 {
     return fallbackPriority == FontFallbackPriority::Symbols
         || fallbackPriority == FontFallbackPriority::Math
         || fallbackPriority == FontFallbackPriority::EmojiText
         || fallbackPriority == FontFallbackPriority::EmojiEmoji;
 };
 
-}
+} // namespace blink