Consolidated all CWVWebView test helpers inside web_view_test_util file.

ios/web_view/test/web_view_test_util.mm

Index: ios/web_view/test/web_view_test_util.mm
diff --git a/ios/web_view/test/web_view_test_util.mm b/ios/web_view/test/web_view_test_util.mm
index 8ed4bc6a71e5ff04e19ac5d4399d17c5367f6869..f2538708a581a572e074e5983d96fbf18e70d594 100644
--- a/ios/web_view/test/web_view_test_util.mm
+++ b/ios/web_view/test/web_view_test_util.mm
@@ -23,7 +23,13 @@ CWVWebView* CreateWebView() {
       configuration:[CWVWebViewConfiguration defaultConfiguration]];
 }
 
-bool TapChromeWebViewElementWithId(CWVWebView* web_view, NSString* element_id) {
+bool LoadUrl(CWVWebView* web_view, NSURL* url) {
+  [web_view loadRequest:[NSURLRequest requestWithURL:url]];
+
+  return WaitForWebViewLoadCompletionOrTimeout(web_view);
+}
+
+bool TapWebViewElementWithId(CWVWebView* web_view, NSString* element_id) {
   // TODO(crbug.com/725524): Share this script with Chrome.
   NSString* script = [NSString
       stringWithFormat:@"(function() {"
@@ -68,5 +74,11 @@ bool WaitForWebViewContainingTextOrTimeout(CWVWebView* web_view,
   });
 }
 
+bool WaitForWebViewLoadCompletionOrTimeout(CWVWebView* web_view) {
+  return WaitUntilConditionOrTimeout(testing::kWaitForPageLoadTimeout, ^{
+    return !web_view.loading;
+  });
+}
+
 }  // namespace test
 }  // namespace ios_web_view