Remove useless FaviconHandler::PageChangedSinceFaviconWasRequested()

components/favicon/core/favicon_driver.h

 // Copyright 2014 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 COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
 #define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
@@ skipping 47 matching lines @@
   virtual bool IsOffTheRecord() = 0;
 
   // Returns whether |url| is bookmarked.
   virtual bool IsBookmarked(const GURL& url) = 0;
 
   // Returns the URL of the current page, if any. Returns an invalid URL
   // otherwise.
   virtual GURL GetActiveURL() = 0;
 
   // Returns whether the page's favicon is valid (returns false if the default
-  // favicon is being used). Requires GetActiveURL() to be valid.
+  // favicon is being used).
   virtual bool GetActiveFaviconValidity() = 0;
 
   // Sets whether the page's favicon is valid (if false, the default favicon is
   // being used).
   virtual void SetActiveFaviconValidity(bool valid) = 0;
 
-  // Returns the URL of the current page's favicon. Requires GetActiveURL() to
-  // be valid.
+  // Returns the URL of the current page's favicon.
   virtual GURL GetActiveFaviconURL() = 0;
 
   // Sets the URL of the favicon's bitmap.
   virtual void SetActiveFaviconURL(const GURL& url) = 0;
 
   // Sets the bitmap of the current page's favicon.
   virtual void SetActiveFaviconImage(const gfx::Image& image) = 0;
 
+  // Returns whether any notifications should be sent when a favicon image is
+  // available.
+  virtual bool ShouldSendFaviconAvailableNotifications() = 0;
+
   // Notifies the driver a favicon image is available. |image| is not
   // necessarily 16x16. |icon_url| is the url the image is from. If
   // |is_active_favicon| is true the image corresponds to the favicon
   // (possibly empty) of the page.
   virtual void OnFaviconAvailable(const gfx::Image& image,
                                   const GURL& icon_url,
                                   bool is_active_favicon) = 0;
 
   // Returns whether the driver is waiting for a download to complete or for
   // data from the FaviconService. Reserved for testing.
@@ skipping 14 matching lines @@
 
  private:
   base::ObserverList<FaviconDriverObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconDriver);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_