Cleanup: Remove unneeded forward declarations from various chrome/browser subdirectories.

chrome/browser/search_engines/template_url.h

 // Copyright (c) 2011 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 CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/time.h"
 #include "chrome/browser/search_engines/search_engine_type.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "googleurl/src/gurl.h"
 
 class PrefService;
 class Profile;
 class SearchTermsData;
 class TemplateURL;
 class WebDataService;
-struct WDKeywordsResult;
 
 // TemplateURL represents the relevant portions of the Open Search Description
 // Document (http://www.opensearch.org/Specifications/OpenSearch).
 // The main use case for TemplateURL is to use the TemplateURLRef returned by
 // suggestions_url or url for keyword/suggestion expansion:
 // . suggestions_url describes a URL that is ideal for as you type suggestions.
 //   The returned results are in the mime type application/x-suggestions+json.
 // . url describes a URL that may be used as a shortcut. Returned results are
 //   are text/html.
 // Before using either one, make sure it's non-NULL, and if you intend to use
@@ skipping 517 matching lines @@
   int logo_id_;
   int prepopulate_id_;
   // The primary unique identifier for Sync. This is only set on TemplateURLs
   // that have been associated with Sync.
   std::string sync_guid_;
 
   // TODO(sky): Add date last parsed OSD file.
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_