[ios] Added WebTestWithWebController::web_state.

ios/web/test/web_test.h

 // Copyright 2014 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_TEST_WEB_TEST_H_
 #define IOS_WEB_TEST_WEB_TEST_H_
 
 #import <UIKit/UIKit.h>
 
 #import "base/ios/block_types.h"
@@ skipping 66 matching lines @@
   void WaitForCondition(ConditionBlock condition);
   // Evaluates JavaScript and returns result as a string.
   // DEPRECATED. TODO(crbug.com/595761): Remove this API.
   NSString* EvaluateJavaScriptAsString(NSString* script);
   // Synchronously executes JavaScript and returns result as id.
   id ExecuteJavaScript(NSString* script);
   // TaskObserver methods (used when waiting for background tasks).
   void WillProcessTask(const base::PendingTask& pending_task) override;
   void DidProcessTask(const base::PendingTask& pending_task) override;
 
+  // Returns web state for this web controller.
+  web::WebState* web_state();
+
   // The web controller for testing.
   base::WeakNSObject<CRWWebController> webController_;
   // true if a task has been processed.
   bool processed_a_task_;
 
  private:
   // LoadURL() for data URLs sometimes lock up navigation, so if the loaded page
   // is not the one expected, reset the web view. In some cases, document or
   // document.body does not exist either; also reset in those cases.
   // Returns true if a reset occurred. One may want to load the page again.
   bool ResetPageIfNavigationStalled(NSString* load_check);
   // Creates a unique HTML element to look for in
   // ResetPageIfNavigationStalled().
   NSString* CreateLoadCheck();
   // The web state for testing.
   std::unique_ptr<WebStateImpl> web_state_impl_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_TEST_WEB_TEST_H_