components: Cleanup class/struct fwd declarations

components/omnibox/browser/search_suggestion_parser.h

 // Copyright 2014 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_OMNIBOX_BROWSER_SEARCH_SUGGESTION_PARSER_H_
 #define COMPONENTS_OMNIBOX_BROWSER_SEARCH_SUGGESTION_PARSER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/omnibox/browser/autocomplete_match_type.h"
 #include "components/omnibox/browser/suggestion_answer.h"
 #include "url/gurl.h"
 
 class AutocompleteInput;
 class AutocompleteSchemeClassifier;
 
 namespace base {
-class DictionaryValue;
 class Value;
 }
 
 namespace net {
 class URLFetcher;
 }
 
 class SearchSuggestionParser {
  public:
   // The Result classes are intermediate representations of AutocompleteMatches,
@@ skipping 264 matching lines @@
       const AutocompleteSchemeClassifier& scheme_classifier,
       int default_result_relevance,
       bool is_keyword_result,
       Results* results);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SearchSuggestionParser);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_SEARCH_SUGGESTION_PARSER_H_