Introduces a search term extraction mechanism working for arbitrary search providers.

chrome/browser/ui/search/search_tab_helper.h

 // Copyright (c) 2012 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_UI_SEARCH_SEARCH_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/common/web_contents_user_data.h"
 #include "chrome/browser/ui/search/search_model.h"
@@ skipping 79 matching lines @@
 
     // The document finished painting.
     PAINTED,
   };
 
   // Sets the mode of the model based on |url|.  |state| distinguishes between
   // loading and loaded ntp states.  |animate| is based on initial navigation
   // and used for the mode change on the |model_|.
   void UpdateModelBasedOnURL(const GURL& url, NTPLoadState state, bool animate);
 
+  // Checks if a search term can be extracted from the provided URL.
+  bool CanExtractSearchTerms(const GURL& url);
+
   // Returns the web contents associated with the tab that owns this helper.
   const content::WebContents* web_contents() const;
 
   // Returns the current RenderWidgetHost of the |web_contents()|.
   content::RenderWidgetHost* GetRenderWidgetHost();
 
   const bool is_search_enabled_;
 
   bool is_initial_navigation_commit_;
 
   // Model object for UI that cares about search state.
   SearchModel model_;
 
   content::NotificationRegistrar registrar_;
 
   // See description above NTPLoadState.
   NTPLoadState ntp_load_state_;
 
   // See description above NTPLoadState.
   int64 main_frame_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchTabHelper);
 };
 
 }  // namespace search
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_