Move the spellcheck unittest into browser next to the file

chrome/browser/spellcheck_unittest.cc

 // Copyright (c) 2006-2008 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 "webkit/glue/webkit_glue.h"
 
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "chrome/browser/spellchecker.h"
@@ skipping 467 matching lines @@
         break;
       }
     }
 
     EXPECT_TRUE(suggested_word_is_present);
   }
 
   // Remove the temp custom dictionary file.
   file_util::Delete(kTempCustomDictionaryFile, false);
 }