Add more missing closing namespace comments.

third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp

 /*
  * Copyright (c) 2015, 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 512 matching lines @@
     EXPECT_STREQ("on", resourceRequest.httpHeaderField("Save-Data").utf8().data());
 }
 
 TEST_F(FrameFetchContextTest, DisabledDataSaver)
 {
     ResourceRequest resourceRequest("http://www.example.com");
     fetchContext->addAdditionalRequestHeaders(resourceRequest, FetchMainResource);
     EXPECT_STREQ("", resourceRequest.httpHeaderField("Save-Data").utf8().data());
 }
 
-} // namespace
+} // namespace blink