Create ChromeEarlGrey waitForWebViewContainingText.

ios/chrome/browser/ui/settings/settings_egtest.mm

Index: ios/chrome/browser/ui/settings/settings_egtest.mm
diff --git a/ios/chrome/browser/ui/settings/settings_egtest.mm b/ios/chrome/browser/ui/settings/settings_egtest.mm
index cdab355450c6cc485a42af301fd31d888e96fed9..7872cd23bcba9560ced94bf25a5752dbdfc62606 100644
--- a/ios/chrome/browser/ui/settings/settings_egtest.mm
+++ b/ios/chrome/browser/ui/settings/settings_egtest.mm
@@ -55,6 +55,7 @@
 #error "This file requires ARC support."
 #endif
 
+using base::SysUTF8ToNSString;
 using chrome_test_util::ButtonWithAccessibilityLabelId;
 using chrome_test_util::NavigationBarDoneButton;
 
@@ -649,9 +650,7 @@ bool IsCertificateCleared() {
 
   // Load |kUrl| and check that cookie is not set.
   [ChromeEarlGrey loadURL:web::test::HttpServer::MakeUrl(kUrl)];
-  [[EarlGrey selectElementWithMatcher:chrome_test_util::WebViewContainingText(
-                                          kResponse)]
-      assertWithMatcher:grey_notNil()];
+  [ChromeEarlGrey waitForWebViewContainingText:SysUTF8ToNSString(kResponse)];
 
   NSDictionary* cookies = [ChromeEarlGrey cookies];
   GREYAssertEqual(0U, cookies.count, @"No cookie should be found.");
@@ -659,13 +658,10 @@ bool IsCertificateCleared() {
   // Visit |kUrlWithSetCookie| to set a cookie and then load |kUrl| to check it
   // is still set.
   [ChromeEarlGrey loadURL:web::test::HttpServer::MakeUrl(kUrlWithSetCookie)];
-  [[EarlGrey selectElementWithMatcher:chrome_test_util::WebViewContainingText(
-                                          kResponseWithSetCookie)]
-      assertWithMatcher:grey_notNil()];
+  [ChromeEarlGrey
+      waitForWebViewContainingText:SysUTF8ToNSString(kResponseWithSetCookie)];
   [ChromeEarlGrey loadURL:web::test::HttpServer::MakeUrl(kUrl)];
-  [[EarlGrey selectElementWithMatcher:chrome_test_util::WebViewContainingText(
-                                          kResponse)]
-      assertWithMatcher:grey_notNil()];
+  [ChromeEarlGrey waitForWebViewContainingText:SysUTF8ToNSString(kResponse)];
 
   cookies = [ChromeEarlGrey cookies];
   GREYAssertEqualObjects(kCookieValue, cookies[kCookieName],
@@ -684,9 +680,7 @@ bool IsCertificateCleared() {
 
   // Reload and test that there are no cookies left.
   [ChromeEarlGrey loadURL:web::test::HttpServer::MakeUrl(kUrl)];
-  [[EarlGrey selectElementWithMatcher:chrome_test_util::WebViewContainingText(
-                                          kResponse)]
-      assertWithMatcher:grey_notNil()];
+  [ChromeEarlGrey waitForWebViewContainingText:SysUTF8ToNSString(kResponse)];
 
   cookies = [ChromeEarlGrey cookies];
   GREYAssertEqual(0U, cookies.count, @"No cookie should be found.");