Fix detection of clipboard change after device restart.

components/open_from_clipboard/clipboard_recent_content_ios.h

Index: components/open_from_clipboard/clipboard_recent_content_ios.h
diff --git a/components/open_from_clipboard/clipboard_recent_content_ios.h b/components/open_from_clipboard/clipboard_recent_content_ios.h
index 5c3ff464aec9d4ec253f5041a946203a451933b3..062d0f1b6917b668851f0d9bd9bedec5adfbff6d 100644
--- a/components/open_from_clipboard/clipboard_recent_content_ios.h
+++ b/components/open_from_clipboard/clipboard_recent_content_ios.h
@@ -30,12 +30,15 @@ class ClipboardRecentContentIOS : public ClipboardRecentContent {
 
   ClipboardRecentContentIOS();
   ~ClipboardRecentContentIOS() override;
-  // Loads information from the user defaults about the latest clipboard entry.
+  // Loads information from the user defaults about the latest pasteboard entry.
   void LoadFromUserDefaults();
-  // Saves information to the user defaults about the latest clipboard entry.
+  // Saves information to the user defaults about the latest pasteboard entry.
   void SaveToUserDefaults();
   // Returns the URL contained in the clipboard (if any).
   GURL URLFromPasteboard();
+  // Returns whether the device has restarted since the last time a pasteboard
+  // change was detected.
+  bool DeviceRestartedSincePasteboardChanged();
 
   // The pasteboard's change count. Increases everytime the pasteboard changes.
   NSInteger lastPasteboardChangeCount_;