Improved loadWebView() so it waits until the webview is rendered.

Test: atest CtsAutoFillServiceTestCases:android.autofillservice.cts.WebViewActivityTest#testAutofillAndSave_withExternalViews_loadWebViewFirst

Fixes: 79348014

Change-Id: I8878bd0b244c46719340ee3d1d89b0be1cf565d7
2 files changed