Move various Shell tests into a subdir.

mojo/shell/tests/package_apptest.cc

 // Copyright 2016 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 <stddef.h>
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
-#include "mojo/shell/package_test.mojom.h"
 #include "mojo/shell/public/cpp/application_test_base.h"
 #include "mojo/shell/public/interfaces/application_manager.mojom.h"
+#include "mojo/shell/tests/package_test.mojom.h"
 
 // Tests that multiple applications can be packaged in a single Mojo application
 // implementing ShellClientFactory; that these applications can be specified by
 // the package's manifest and are thus registered with the PackageManager.
 
 namespace mojo {
 namespace shell {
 namespace {
 void ReceiveName(std::string* out_name,
                  base::RunLoop* loop,
@@ skipping 49 matching lines @@
     run_loop.Run();
     EXPECT_EQ("B", b_name);
     uint32_t id = mojom::Shell::kInvalidApplicationID;
     EXPECT_TRUE(connection->GetRemoteApplicationID(&id));
     ids.insert(id);
   }
 }
 
 }  // namespace shell
 }  // namespace mojo