mash: Rename browser_driver to app_driver.

mash/browser_driver/main.cc

Index: mash/browser_driver/main.cc
diff --git a/mash/browser_driver/main.cc b/mash/browser_driver/main.cc
deleted file mode 100644
index 53244a78d935d55da6cefdbd41f10bc8b07db916..0000000000000000000000000000000000000000
--- a/mash/browser_driver/main.cc
+++ /dev/null
@@ -1,13 +0,0 @@
-// 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 "mash/browser_driver/browser_driver_application_delegate.h"
-#include "mojo/public/c/system/main.h"
-#include "services/shell/public/cpp/application_runner.h"
-
-MojoResult MojoMain(MojoHandle shell_handle) {
-  shell::ApplicationRunner runner(
-      new mash::browser_driver::BrowserDriverApplicationDelegate);
-  return runner.Run(shell_handle);
-}