Wait for CefBrowserContext initialization (see issue #2969)

With the Chrome runtime, Profile initialization may be asynchronous. Code that
waited on CefBrowserContext creation now needs to wait on CefBrowserContext
initialization instead.

libcef/common/net/url_util.h

@@ -0,0 +1,27 @@
+// Copyright (c) 2021 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#ifndef CEF_LIBCEF_COMMON_NET_URL_UTIL_H_
+#define CEF_LIBCEF_COMMON_NET_URL_UTIL_H_
+#pragma once
+
+#include "include/cef_base.h"
+
+class GURL;
+
+namespace url_util {
+
+// Convert |url| to a GURL, adding a scheme prefix if necessary.
+// If |fixup| is true then FixupGURL() will also be called.
+GURL MakeGURL(const CefString& url, bool fixup);
+
+// Fix common problems with user-typed text. Among other things, this:
+// - Converts absolute file paths to "file://" URLs.
+// - Normalizes "about:" and "chrome:" to "chrome://" URLs
+// Modifies |gurl| if necessary. Returns true if |gurl| is empty or valid.
+bool FixupGURL(GURL& gurl);
+
+}  // namespace url_util
+
+#endif  // CEF_LIBCEF_COMMON_NET_URL_UTIL_H_