Create ChromeEarlGrey waitForWebViewContainingText.

ios/chrome/browser/ui/toolbar/toolbar_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>
 #import <XCTest/XCTest.h>
 
 #include "base/ios/ios_util.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
@@ skipping 14 matching lines @@
 #import "ios/web/public/test/http_server/http_server.h"
 #include "ios/web/public/test/http_server/http_server_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 using chrome_test_util::ButtonWithAccessibilityLabelId;
 using chrome_test_util::OmniboxText;
-using chrome_test_util::WebViewContainingText;
 
 // Toolbar integration tests for Chrome.
 @interface ToolbarTestCase : ChromeTestCase
 @end
 
 namespace {
 
 // Displays the |panel_type| new tab page.  On a phone this will send a command
 // to display a dialog, on tablet this calls -selectPanel to slide the NTP.
 void SelectNewTabPagePanel(NewTabPage::PanelIdentifier panel_type) {
@@ skipping 25 matching lines @@
 
 // Verifies that entering a URL in the omnibox navigates to the correct URL and
 // displays content.
 - (void)testEnterURL {
   web::test::SetUpFileBasedHttpServer();
   const GURL URL = web::test::HttpServer::MakeUrl(
       "http://ios/testing/data/http_server_files/destination.html");
   [ChromeEarlGrey loadURL:URL];
   [[EarlGrey selectElementWithMatcher:OmniboxText(URL.GetContent())]
       assertWithMatcher:grey_notNil()];
-  [[EarlGrey selectElementWithMatcher:WebViewContainingText("You've arrived")]
-      assertWithMatcher:grey_notNil()];
+  [ChromeEarlGrey waitForWebViewContainingText:"You've arrived"];
 }
 
 // Verifies opening a new tab from the tools menu.
 - (void)testNewTabFromMenu {
   chrome_test_util::AssertMainTabCount(1);
 
   // Open tab via the UI.
   [ChromeEarlGreyUI openToolsMenu];
   id<GREYMatcher> newTabButtonMatcher =
       grey_accessibilityID(kToolsMenuNewTabId);
@@ skipping 374 matching lines @@
   NSString* clearText = IsIPadIdiom() ? typingShield : cancelButtonText;
 
   [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(clearText)]
       performAction:grey_tap()];
   [[EarlGrey selectElementWithMatcher:chrome_test_util::Omnibox()]
       assertWithMatcher:chrome_test_util::OmniboxText("")];
 
   SelectNewTabPagePanel(NewTabPage::kMostVisitedPanel);
 }
 @end