Revert of ChromeWebView integration test for Incognito.

ios/web_view/test/web_view_test_util.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_TEST_WEB_VIEW_TEST_UTIL_H_
 #define IOS_WEB_VIEW_TEST_WEB_VIEW_TEST_UTIL_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/compiler_specific.h"
 
 @class CWVWebView;
-@class CWVWebViewConfiguration;
 
 namespace ios_web_view {
 namespace test {
 
-// Creates web view with given |configuration| and frame equal to screen bounds.
-CWVWebView* CreateWebView(CWVWebViewConfiguration* configuration)
-    WARN_UNUSED_RESULT;
-
 // Creates web view with default configuration and frame equal to screen bounds.
 CWVWebView* CreateWebView() WARN_UNUSED_RESULT;
 
 // Loads |URL| in |web_view| and waits until the load completes. Asserts if
 // loading does not complete.
 bool LoadUrl(CWVWebView* web_view, NSURL* url) WARN_UNUSED_RESULT;
 
 // Returns whether the element with |element_id| in the passed |web_view| has
 // been tapped using a JavaScript click() event.
 bool TapWebViewElementWithId(CWVWebView* web_view,
@@ skipping 10 matching lines @@
 
 // Waits until |web_view| stops loading. Returns false if the condition is not
 // met within a timeout.
 bool WaitForWebViewLoadCompletionOrTimeout(CWVWebView* web_view)
     WARN_UNUSED_RESULT;
 
 }  // namespace test
 }  // namespace ios_web_view
 
 #endif  // IOS_WEB_VIEW_TEST_WEB_VIEW_TEST_UTIL_H_