Prevent querying of restricted query values.

chrome/renderer/searchbox/searchbox.h

 // Copyright 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_RENDERER_SEARCHBOX_SEARCHBOX_H_
 #define CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 class RenderView;
 }
 
 class SearchBox : public content::RenderViewObserver,
                   public content::RenderViewObserverTracker<SearchBox> {
  public:
   explicit SearchBox(content::RenderView* render_view);
   virtual ~SearchBox();
 
   // Sends ChromeViewHostMsg_SetSuggestions to the browser.
+  // If |suggestions| is non-empty and the first element in |suggestions| is of
+  // type INSTANT_COMPLETE_REPLACE then this method will also update the current
+  // query text.
   void SetSuggestions(const std::vector<InstantSuggestion>& suggestions);
 
+  // Clears the current query text, used to ensure that restricted query strings
+  // are not retained.
+  void ClearQuery();
+
   // Sends ChromeViewHostMsg_ShowInstantOverlay to the browser.
   void ShowInstantOverlay(InstantShownReason reason,
                           int height,
                           InstantSizeUnits units);
 
   // Sends ChromeViewHostMsg_StartCapturingKeyStrokes to the browser.
   void StartCapturingKeyStrokes();
 
   // Sends ChromeViewHostMsg_StopCapturingKeyStrokes to the browser.
   void StopCapturingKeyStrokes();
@@ skipping 97 matching lines @@
   // TODO(dcblack): Unify this logic to work with both Most Visited and
   // history suggestions.  (crbug/175768)
   std::map<string16, int> url_to_restricted_id_map_;
   std::map<int, string16> restricted_id_to_url_map_;
   int last_restricted_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBox);
 };
 
 #endif  // CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_