Create ChromeEarlGrey waitForWebViewContainingText.

ios/chrome/browser/web/http_auth_egtest.mm

 // Copyright 2016 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 <EarlGrey/EarlGrey.h>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/chrome/test/app/navigation_test_util.h"
+#import "ios/chrome/test/earl_grey/chrome_earl_grey.h"
 #import "ios/chrome/test/earl_grey/chrome_matchers.h"
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
 #import "ios/testing/wait_util.h"
 #import "ios/web/public/test/http_server.h"
 #include "ios/web/public/test/http_server_util.h"
 #import "ios/web/public/test/response_providers/http_auth_response_provider.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "url/gurl.h"
 
 using testing::WaitUntilConditionOrTimeout;
 using testing::kWaitForPageLoadTimeout;
-using chrome_test_util::WebViewContainingText;
 
 namespace {
 
 // Returns matcher for HTTP Authentication dialog.
 id<GREYMatcher> HttpAuthDialog() {
   NSString* title = l10n_util::GetNSStringWithFixup(IDS_LOGIN_DIALOG_TITLE);
   return chrome_test_util::StaticTextWithAccessibilityLabel(title);
 }
 
 // Returns matcher for Username text field.
@@ skipping 49 matching lines @@
   chrome_test_util::LoadUrl(URL);
   WaitForHttpAuthDialog();
 
   // Enter valid username and password.
   [[EarlGrey selectElementWithMatcher:UsernameField()]
       performAction:grey_typeText(@"gooduser")];
   [[EarlGrey selectElementWithMatcher:PasswordField()]
       performAction:grey_typeText(@"goodpass")];
   [[EarlGrey selectElementWithMatcher:LoginButton()] performAction:grey_tap()];
 
-  const std::string pageText = web::HttpAuthResponseProvider::page_text();
-  [[EarlGrey selectElementWithMatcher:WebViewContainingText(pageText)]
-      assertWithMatcher:grey_notNil()];
+  NSString* pageText =
+      base::SysUTF8ToNSString(web::HttpAuthResponseProvider::page_text());
+  [ChromeEarlGrey waitForWebViewContainingText:pageText];
 }
 
 // Tests Basic HTTP Authentication with incorrect username and password.
 - (void)testUnsuccessfullBasicAuth {
   if (IsIPadIdiom()) {
     // EG does not allow interactions with HTTP Dialog when loading spinner is
     // animated. TODO(crbug.com/680290): Enable this test on iPad when EarlGrey
     // allows tapping dialog buttons with active page load spinner.
     EARL_GREY_TEST_DISABLED(@"Tab Title not displayed on handset.");
   }
@@ skipping 30 matching lines @@
   chrome_test_util::LoadUrl(URL);
   WaitForHttpAuthDialog();
 
   [[EarlGrey selectElementWithMatcher:chrome_test_util::CancelButton()]
       performAction:grey_tap()];
   [[EarlGrey selectElementWithMatcher:HttpAuthDialog()]
       assertWithMatcher:grey_nil()];
 }
 
 @end