[ios] Added WebTestWithWebController::web_state.

ios/web/test/web_test.mm

 // 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.
 
 #import "ios/web/test/web_test.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/memory/ptr_util.h"
@@ skipping 183 matching lines @@
 void WebTestWithWebController::WillProcessTask(
     const base::PendingTask& pending_task) {
   // Nothing to do.
 }
 
 void WebTestWithWebController::DidProcessTask(
     const base::PendingTask& pending_task) {
   processed_a_task_ = true;
 }
 
+web::WebState* WebTestWithWebController::web_state() {
+  return web_state_impl_.get();
+}
+
 bool WebTestWithWebController::ResetPageIfNavigationStalled(
     NSString* load_check) {
   NSString* inner_html = EvaluateJavaScriptAsString(
       @"(document && document.body && document.body.innerHTML) || 'undefined'");
   if ([inner_html rangeOfString:load_check].location == NSNotFound) {
     web_state_impl_->SetWebUsageEnabled(false);
     web_state_impl_->SetWebUsageEnabled(true);
     [webController_ triggerPendingLoad];
     return true;
   }
   return false;
 }
 
 NSString* WebTestWithWebController::CreateLoadCheck() {
   return [NSString stringWithFormat:@"<p style=\"display: none;\">%d</p>",
                                     s_html_load_count++];
 }
 
 }  // namespace web