Add script to generate CronetChromeWebView.framework

ios/web_view/public/cwv_translation_policy.h

 // Copyright 2017 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_VIEW_PUBLIC_CWV_TRANSLATION_POLICY_H
 #define IOS_WEB_VIEW_PUBLIC_CWV_TRANSLATION_POLICY_H
 
-#import <ChromeWebView/cwv_export.h>
 #import <Foundation/Foundation.h>
 
+#import "cwv_export.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 @class CWVTranslationLanguage;
 
 typedef NS_ENUM(NSInteger, CWVTranslationPolicyType) {
   CWVTranslationPolicyAsk = 1,  // Prompt user on whether or not to translate.
   CWVTranslationPolicyNever,    // Never translate.
   CWVTranslationPolicyAuto      // Automatically translate according to policy.
 };
 
@@ skipping 17 matching lines @@
 // It is nil unless |type| is CWVTranslationPolicyAuto.
 @property(nonatomic, nullable, readonly) CWVTranslationLanguage* language;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 @end
 
 NS_ASSUME_NONNULL_END
 
 #endif  // IOS_WEB_VIEW_PUBLIC_CWV_TRANSLATION_POLICY_H