Create ChromeEarlGrey waitForWebViewContainingText.

ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm

Index: ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm
diff --git a/ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm b/ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm
index 97e40f8867e16f391c4ae866e86ff068b4276da9..a1b47878f81b83b957a344ca2482dc5c14343be6 100644
--- a/ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm
+++ b/ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm
@@ -24,6 +24,7 @@
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/chrome/test/app/chrome_test_util.h"
 #import "ios/chrome/test/base/scoped_block_swizzler.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"
 #include "ios/shared/chrome/browser/ui/omnibox/location_bar_delegate.h"
@@ -280,14 +281,6 @@ void TapKeyboardReturnKeyInOmniboxWithText(std::string text) {
       assertWithMatcher:grey_notNil()];
 }
 
-// Checks that the page that is currently loaded contains the |response|.
-- (void)assertTestURLIsLoaded:(std::string)response {
-  id<GREYMatcher> testURLResponseMatcher =
-      chrome_test_util::WebViewContainingText(response);
-  [[EarlGrey selectElementWithMatcher:testURLResponseMatcher]
-      assertWithMatcher:grey_notNil()];
-}
-
 #pragma mark helpers for dialogs
 
 // Checks that the modal presented by |viewController| is of class |klass|.
@@ -787,7 +780,7 @@ void TapKeyboardReturnKeyInOmniboxWithText(std::string text) {
   } else {
     TapKeyboardReturnKeyInOmniboxWithText(result);
   }
-  [self assertTestURLIsLoaded:response];
+  [ChromeEarlGrey waitForWebViewContainingText:response];
 
   // Press the back button to get back to the NTP.
   TapButton(WebToolbarBackButton());