[ios] Remove the openJavascript method from Tab.

ios/chrome/browser/tabs/tab.h

 // Copyright 2012 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 IOS_CHROME_BROWSER_TABS_TAB_H_
 #define IOS_CHROME_BROWSER_TABS_TAB_H_
 
 #import <UIKit/UIKit.h>
 
 #include <memory>
@@ skipping 184 matching lines @@
 - (NSString*)currentSessionID;
 
 // Sets the parent tab model for this tab.  Can only be called if the tab does
 // not already have a parent tab model set.
 // TODO(crbug.com/228575): Create a delegate interface and remove this.
 - (void)setParentTabModel:(TabModel*)model;
 
 // Replace the content of the tab with the content described by |SessionTab|.
 - (void)loadSessionTab:(const sessions::SessionTab*)sessionTab;
 
-// Evaluate JavaScript asynchronously in the tab.
-- (void)openJavascript:(NSString*)javascript;
-
 // Stop the page loading.
 // Equivalent to the user pressing 'stop', or a window.stop() command.
 - (void)stopLoading;
 
 // Triggers the asynchronous loading of the tab's favicon. This will be done
 // automatically when a page loads, but this can be used to trigger favicon
 // fetch earlier (e.g., for a tab that will be shown without loading).
 - (void)fetchFavicon;
 
 // Returns the favicon for the page currently being shown in this Tab, or |nil|
@@ skipping 126 matching lines @@
 
 // Called when this tab is hidden.
 - (void)wasHidden;
 
 // Evaluates U2F result.
 - (void)evaluateU2FResultFromURL:(const GURL&)url;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_TABS_TAB_H_