Remove InstantTab::Delegate::InstantSupportDetermined

chrome/browser/ui/search/instant_tab.h

Index: chrome/browser/ui/search/instant_tab.h
diff --git a/chrome/browser/ui/search/instant_tab.h b/chrome/browser/ui/search/instant_tab.h
index 721acc52fbcacc0803dd82ea4234c913f2b2f453..68ea1368b054680b8ab35fba8e1dde058467857a 100644
--- a/chrome/browser/ui/search/instant_tab.h
+++ b/chrome/browser/ui/search/instant_tab.h
@@ -8,9 +8,7 @@
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "chrome/browser/ui/search/search_model_observer.h"
 #include "content/public/browser/web_contents_observer.h"
-#include "ui/base/page_transition_types.h"
 
 class GURL;
 
@@ -20,19 +18,13 @@ class WebContents;
 
 // InstantTab is used to exchange messages with a page that implements the
 // Instant/Embedded Search API (http://dev.chromium.org/embeddedsearch).
-class InstantTab : public content::WebContentsObserver,
-                   public SearchModelObserver {
+class InstantTab : public content::WebContentsObserver {
  public:
   // InstantTab calls its delegate in response to messages received from the
   // page. Each method is called with the |contents| corresponding to the page
   // we are observing.
   class Delegate {
    public:
-    // Called upon determination of Instant API support. Either in response to
-    // the page loading or because we received some other message.
-    virtual void InstantSupportDetermined(const content::WebContents* contents,
-                                          bool supports_instant) = 0;
-
     // Called when the page is about to navigate to |url|.
     virtual void InstantTabAboutToNavigateMainFrame(
         const content::WebContents* contents,
@@ -42,8 +34,7 @@ class InstantTab : public content::WebContentsObserver,
     virtual ~Delegate();
   };
 
-  explicit InstantTab(Delegate* delegate, content::WebContents* web_contents);
-
+  InstantTab(Delegate* delegate, content::WebContents* web_contents);
   ~InstantTab() override;
 
   // Sets up communication with the WebContents passed to the constructor. Does
@@ -55,12 +46,6 @@ class InstantTab : public content::WebContentsObserver,
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
 
-  // Overridden from SearchModelObserver:
-  void ModelChanged(const SearchModel::State& old_state,
-                    const SearchModel::State& new_state) override;
-
-  void InstantSupportDetermined(bool supports_instant);
-
   Delegate* const delegate_;
 
   content::WebContents* pending_web_contents_;