[ios] Removed deprecated JS execution API.

ios/web/interstitials/native_web_interstitial_impl.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 IOS_WEB_INTERSTITIALS_NATIVE_WEB_INTERSTITIAL_IMPL_H_
 #define IOS_WEB_INTERSTITIALS_NATIVE_WEB_INTERSTITIAL_IMPL_H_
 
 #include "ios/web/interstitials/web_interstitial_impl.h"
 
 #include <memory>
@@ skipping 16 matching lines @@
       std::unique_ptr<NativeWebInterstitialDelegate> delegate);
   ~NativeWebInterstitialImpl() override;
 
   // WebInterstitialImpl implementation:
   CRWContentView* GetContentView() const override;
 
  protected:
   // WebInterstitialImpl implementation:
   void PrepareForDisplay() override;
   WebInterstitialDelegate* GetDelegate() const override;
-  void EvaluateJavaScript(NSString* script,
-                          JavaScriptCompletion completionHandler) override;
   void ExecuteJavaScript(NSString* script,
                          JavaScriptResultBlock completion_handler) override;
 
  private:
   // The native interstitial delegate.
   std::unique_ptr<NativeWebInterstitialDelegate> delegate_;
   // The transient content view containing interstitial content.
   base::scoped_nsobject<CRWContentView> content_view_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_INTERSTITIALS_NATIVE_WEB_INTERSTITIAL_IMPL_H_