components: Cleanup class/struct fwd declarations

components/url_matcher/url_matcher.h

 // Copyright 2013 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.
 
 #ifndef COMPONENTS_URL_MATCHER_URL_MATCHER_H_
 #define COMPONENTS_URL_MATCHER_URL_MATCHER_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "components/url_matcher/regex_set_matcher.h"
 #include "components/url_matcher/substring_set_matcher.h"
 #include "components/url_matcher/url_matcher_export.h"
 
 class GURL;
 
-namespace base {
-class DictionaryValue;
-}
-
 namespace url_matcher {
 
 // This class represents a single URL matching condition, e.g. a match on the
 // host suffix or the containment of a string in the query component of a GURL.
 //
 // The difference from a simple StringPattern is that this also supports
 // checking whether the {Host, Path, Query} of a URL contains a string. The
 // reduction of URL matching conditions to StringPatterns conducted by
 // URLMatcherConditionFactory is not capable of expressing that alone.
 //
@@ skipping 391 matching lines @@
   RegexSetMatcher origin_and_path_regex_set_matcher_;
   std::set<const StringPattern*> registered_full_url_patterns_;
   std::set<const StringPattern*> registered_url_component_patterns_;
 
   DISALLOW_COPY_AND_ASSIGN(URLMatcher);
 };
 
 }  // namespace url_matcher
 
 #endif  // COMPONENTS_URL_MATCHER_URL_MATCHER_H_