Consolidated all CWVWebView test helpers inside web_view_test_util file.

ios/web_view/test/chrome_web_view_test.mm

Index: ios/web_view/test/chrome_web_view_test.mm
diff --git a/ios/web_view/test/chrome_web_view_test.mm b/ios/web_view/test/chrome_web_view_test.mm
index 2a8b6cb420027a88027d59a857a4e69c3040a6a4..f51ad19a7eca8e13493f25cd29371a3a8ce94de3 100644
--- a/ios/web_view/test/chrome_web_view_test.mm
+++ b/ios/web_view/test/chrome_web_view_test.mm
@@ -133,18 +133,4 @@ GURL ChromeWebViewTest::GetUrlForPageWithTitleAndBody(const std::string& title,
   return url;
 }
 
-void ChromeWebViewTest::LoadUrl(CWVWebView* web_view, NSURL* url) {
-  [web_view loadRequest:[NSURLRequest requestWithURL:url]];
-
-  WaitForPageLoadCompletion(web_view);
-}
-
-void ChromeWebViewTest::WaitForPageLoadCompletion(CWVWebView* web_view) {
-  BOOL success =
-      testing::WaitUntilConditionOrTimeout(testing::kWaitForPageLoadTimeout, ^{
-        return !web_view.isLoading;
-      });
-  ASSERT_TRUE(success);
-}
-
 }  // namespace ios_web_view