Stop using UIPasteboardChangedNotification.

components/open_from_clipboard/clipboard_recent_content.h

 // Copyright 2015 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_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
 #define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 13 matching lines @@
   // method does *not* create the singleton and will return null if no instance
   // was registered via SetInstance().
   static ClipboardRecentContent* GetInstance();
 
   // Sets the global instance of ClipboardRecentContent singleton.
   static void SetInstance(ClipboardRecentContent* instance);
 
   // Returns true if the clipboard contains a recent URL that has not been
   // supressed, and copies it in |url|. Otherwise, returns false. |url| must not
   // be null.
-  virtual bool GetRecentURLFromClipboard(GURL* url) const = 0;
-
-  // Reports that the URL contained in the pasteboard was displayed.
-  virtual void RecentURLDisplayed() = 0;
+  virtual bool GetRecentURLFromClipboard(GURL* url) = 0;
 
   // Returns how old the content of the clipboard is.
   virtual base::TimeDelta GetClipboardContentAge() const = 0;
 
   // Prevent GetRecentURLFromClipboard from returning anything until the
   // clipboard's content changed.
   virtual void SuppressClipboardContent() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ClipboardRecentContent);
 };
 
 #endif  // COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_