Remove useless FaviconHandler::PageChangedSinceFaviconWasRequested()

components/favicon/ios/web_favicon_driver.h

Index: components/favicon/ios/web_favicon_driver.h
diff --git a/components/favicon/ios/web_favicon_driver.h b/components/favicon/ios/web_favicon_driver.h
index c289748284a4a6573bb9142ad2f61570a54046d2..a389bed5fc49c0dfe74368809f9847507a8cd956 100644
--- a/components/favicon/ios/web_favicon_driver.h
+++ b/components/favicon/ios/web_favicon_driver.h
@@ -29,6 +29,7 @@ class WebFaviconDriver : public web::WebStateObserver,
                                 bookmarks::BookmarkModel* bookmark_model);
 
   // FaviconDriver implementation.
+  void FetchFavicon(const GURL& url) override;
   void SaveFavicon() override;
   gfx::Image GetFavicon() const override;
   bool FaviconIsValid() const override;
@@ -40,6 +41,7 @@ class WebFaviconDriver : public web::WebStateObserver,
   GURL GetActiveFaviconURL() override;
   void SetActiveFaviconURL(const GURL& url) override;
   void SetActiveFaviconImage(const gfx::Image& image) override;
+  bool ShouldSendFaviconAvailableNotifications() override;
 
  private:
   friend class web::WebStateUserData<WebFaviconDriver>;
@@ -50,6 +52,9 @@ class WebFaviconDriver : public web::WebStateObserver,
                    bookmarks::BookmarkModel* bookmark_model);
   ~WebFaviconDriver() override;
 
+  // Returns whether the active URL has changed since FetchFavicon() was called.
+  bool ActiveURLChangedSinceFetchFavicon();
+
   // web::WebStateObserver implementation.
   void FaviconUrlUpdated(
       const std::vector<web::FaviconURL>& candidates) override;
@@ -57,6 +62,9 @@ class WebFaviconDriver : public web::WebStateObserver,
   // Returns the active navigation entry's favicon.
   web::FaviconStatus& GetFaviconStatus();
 
+  // The URL passed to FetchFavicon().
+  GURL fetch_favicon_url_;
+
   DISALLOW_COPY_AND_ASSIGN(WebFaviconDriver);
 };