Add more missing closing namespace comments.

third_party/WebKit/Source/platform/text/TextChecking.h

 /*
  * Copyright (c) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 100 matching lines @@
 class TextCheckingRequest : public RefCountedWillBeGarbageCollectedFinalized<TextCheckingRequest> {
 public:
     virtual ~TextCheckingRequest() { }
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 
     virtual const TextCheckingRequestData& data() const = 0;
     virtual void didSucceed(const Vector<TextCheckingResult>&) = 0;
     virtual void didCancel() = 0;
 };
 
-}
+} // namespace blink
 
 #endif // TextChecking_h