Remove SearchIPCRouter::Delegate::OnInstantSupportDetermined

chrome/browser/ui/search/search_tab_helper.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_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 20 matching lines @@
 class GURL;
 class InstantService;
 class InstantTabTest;
 class OmniboxView;
 class Profile;
 class SearchIPCRouterTest;
 
 // Per-tab search "helper".  Acts as the owner and controller of the tab's
 // search UI model.
 //
-// When the page is finished loading, SearchTabHelper determines the instant
-// support for the page. When a navigation entry is committed (except for
-// in-page navigations), SearchTabHelper resets the instant support state to
-// INSTANT_SUPPORT_UNKNOWN and cause support to be determined again.
+// When a navigation is committed and when the page is finished loading,
+// SearchTabHelper determines the instant support for the page, i.e. whether
+// the page is rendered in the instant process.
 class SearchTabHelper : public content::WebContentsObserver,
                         public content::WebContentsUserData<SearchTabHelper>,
                         public InstantServiceObserver,
                         public SearchIPCRouter::Delegate {
  public:
   ~SearchTabHelper() override;
 
   SearchModel* model() {
     return &model_;
   }
@@ skipping 72 matching lines @@
   void DidStartNavigation(
       content::NavigationHandle* navigation_handle) override;
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
   void DidFinishLoad(content::RenderFrameHost* render_frame_host,
                      const GURL& validated_url) override;
   void NavigationEntryCommitted(
       const content::LoadCommittedDetails& load_details) override;
 
   // Overridden from SearchIPCRouter::Delegate:
-  void OnInstantSupportDetermined(bool supports_instant) override;
   void FocusOmnibox(OmniboxFocusState state) override;
   void OnDeleteMostVisitedItem(const GURL& url) override;
   void OnUndoMostVisitedDeletion(const GURL& url) override;
   void OnUndoAllMostVisitedDeletions() override;
   void OnLogEvent(NTPLoggingEventType event, base::TimeDelta time) override;
   void OnLogMostVisitedImpression(int position,
                                   ntp_tiles::TileSource tile_source,
                                   ntp_tiles::TileVisualType tile_type) override;
   void OnLogMostVisitedNavigation(int position,
                                   ntp_tiles::TileSource tile_source,
@@ skipping 32 matching lines @@
   content::WebContents* web_contents_;
 
   SearchIPCRouter ipc_router_;
 
   InstantService* instant_service_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchTabHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_