html_viewer/web_view: An app for running layout-tests.

components/web_view/test_runner/launcher.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/web_view/test_runner/launcher.h"
+
+#include "base/bind.h"
+#include "base/message_loop/message_loop.h"
+#include "mojo/runner/context.h"
+#include "url/gurl.h"
+
+namespace web_view {
+
+int LaunchTestRunner(int argc, char** argv) {
+  // We want the runner::Context to outlive the MessageLoop so that pipes are
+  // all gracefully closed / error-out before we try to shut the Context down.
+  mojo::runner::Context shell_context;
+  {
+    base::MessageLoop message_loop;
+    if (!shell_context.Init()) {
+      return 0;
+    }
+
+    message_loop.PostTask(FROM_HERE,
+                          base::Bind(&mojo::runner::Context::Run,
+                                     base::Unretained(&shell_context),
+                                     GURL("mojo:web_view_test_runner")));
+    message_loop.Run();
+
+    // Must be called before |message_loop| is destroyed.
+    shell_context.Shutdown();
+  }
+
+  return 0;
+}
+
+}  // namespace web_view