Remove unused instant support for chrome://large-icon and chrome://fallback-icon

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 <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 #include "ui/base/window_open_disposition.h"
 #include "url/gurl.h"
 
 class SearchBox : public content::RenderFrameObserver,
                   public content::RenderFrameObserverTracker<SearchBox>,
                   public chrome::mojom::SearchBox {
  public:
   enum ImageSourceType {
     NONE = -1,
     FAVICON,
-    LARGE_ICON,
-    FALLBACK_ICON,
     THUMB
   };
 
   // Helper class for GenerateImageURLFromTransientURL() to adapt SearchBox's
   // instance, thereby allow mocking for unit tests.
   class IconURLHelper {
    public:
     IconURLHelper();
     virtual ~IconURLHelper();
     // Retruns view id for validating icon URL.
@@ skipping 25 matching lines @@
   // Sends HistorySyncCheck to the browser.
   void CheckIsUserSyncingHistory();
 
   // Sends DeleteMostVisitedItem to the browser.
   void DeleteMostVisitedItem(InstantRestrictedID most_visited_item_id);
 
   // Generates the image URL of |type| for the most visited item specified in
   // |transient_url|. If |transient_url| is valid, |url| with a translated URL
   // and returns true.  Otherwise it depends on |type|:
   // - FAVICON: Returns true and renders an URL to display the default favicon.
-  // - LARGE_ICON and FALLBACK_ICON: Returns false.
   //
   // For |type| == FAVICON, valid forms of |transient_url|:
   //    chrome-search://favicon/<view_id>/<restricted_id>
   //    chrome-search://favicon/<favicon_parameters>/<view_id>/<restricted_id>
   //
-  // For |type| == LARGE_ICON, valid form of |transient_url|:
-  //    chrome-search://large-icon/<size>/<view_id>/<restricted_id>
-  //
-  // For |type| == FALLBACK_ICON, valid form of |transient_url|:
-  //    chrome-search://fallback-icon/<icon specs>/<view_id>/<restricted_id>
-  //
   // For |type| == THUMB, valid form of |transient_url|:
   //    chrome-search://thumb/<render_view_id>/<most_visited_item_id>
   //
   // We do this to prevent search providers from abusing image URLs and deduce
   // whether the user has visited a particular page. For example, if
   // "chrome-search://favicon/http://www.secretsite.com" is accessible, then
   // the search provider can use its return code to determine whether the user
   // has visited "http://www.secretsite.com". Therefore we require search
   // providers to specify URL by "<view_id>/<restricted_id>". We then translate
   // this to the original |url|, and pass the request to the proper endpoint.
@@ skipping 73 matching lines @@
   base::string16 query_;
   EmbeddedSearchRequestParams embedded_search_request_params_;
   InstantSuggestion suggestion_;
   chrome::mojom::InstantAssociatedPtr instant_service_;
   mojo::AssociatedBinding<chrome::mojom::SearchBox> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBox);
 };
 
 #endif  // CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_