Create ChromeEarlGrey waitForWebViewContainingText.

ios/web/shell/test/meta_tags_egtest.mm

Index: ios/web/shell/test/meta_tags_egtest.mm
diff --git a/ios/web/shell/test/meta_tags_egtest.mm b/ios/web/shell/test/meta_tags_egtest.mm
index a1f92005ca99e1ed612891692bc847f28b4c08ce..ccebfa9fc3ab10c6842c205fc9e7d3e0479131ad 100644
--- a/ios/web/shell/test/meta_tags_egtest.mm
+++ b/ios/web/shell/test/meta_tags_egtest.mm
@@ -5,6 +5,7 @@
 #include <map>
 
 #include "base/strings/stringprintf.h"
+#include "base/strings/sys_string_conversions.h"
 #import "base/test/ios/wait_util.h"
 #import "ios/web/public/test/http_server.h"
 #include "ios/web/public/test/http_server_util.h"
@@ -35,7 +36,6 @@ const char kRefreshMetaPageTemplate[] =
 
 using web::test::HttpServer;
 using web::AddressFieldText;
-using web::WebViewContainingText;
 
 // META tag test cases for the web shell.
 @interface MetaTagsTestCase : WebShellTestCase
@@ -75,8 +75,8 @@ using web::WebViewContainingText;
   // Verify that redirect happened.
   [[EarlGrey selectElementWithMatcher:AddressFieldText(destinationURL.spec())]
       assertWithMatcher:grey_notNil()];
-  [[EarlGrey selectElementWithMatcher:WebViewContainingText(kDestinationPage)]
-      assertWithMatcher:grey_notNil()];
+  [ShellEarlGrey
+      waitForWebViewContainingText:base::SysUTF8ToNSString(kDestinationPage)];
 }
 
 @end