Moves some files into mojo/common

mojo/shell/test/run_all_unittests.cc

-// Copyright (c) 2013 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 "base/basictypes.h"
-#include "base/bind.h"
-#include "base/compiler_specific.h"
-#include "base/test/launcher/unit_test_launcher.h"
-#include "base/test/test_suite.h"
-#include "mojo/shell/context.h"
-
-class ShellTestSuite : public base::TestSuite {
- public:
-  ShellTestSuite(int argc, char** argv) : base::TestSuite(argc, argv) {}
-
- private:
-  base::MessageLoop message_loop_;
-  // Context is currently a singleton and requires a MessageLoop.
-  mojo::shell::Context context_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShellTestSuite);
-};
-
-int main(int argc, char** argv) {
-  ShellTestSuite test_suite(argc, argv);
-
-  return base::LaunchUnitTests(
-      argc, argv, base::Bind(&ShellTestSuite::Run,
-                             base::Unretained(&test_suite)));
-}