Extract a Connector interface from Shell that can be cloned & passed to other threads

mojo/shell/tests/application_manager_apptest.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 <stddef.h>
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 12 matching lines @@
 namespace mojo {
 namespace shell {
 namespace {
 
 class ApplicationManagerAppTestDelegate
     : public ShellClient,
       public InterfaceFactory<CreateInstanceForHandleTest>,
       public CreateInstanceForHandleTest {
  public:
   ApplicationManagerAppTestDelegate()
-      : target_id_(mojom::Shell::kInvalidApplicationID),
+      : target_id_(mojom::Connector::kInvalidApplicationID),
         binding_(this) {}
   ~ApplicationManagerAppTestDelegate() override {}
 
   uint32_t target_id() const { return target_id_; }
 
  private:
   // mojo::ShellClient:
   void Initialize(Shell* shell, const std::string& url, uint32_t id,
                   uint32_t user_id) override {}
   bool AcceptConnection(Connection* connection) override {
@@ skipping 125 matching lines @@
   //    launches a process. #becauselinkerrors).
   mojo::shell::test::mojom::DriverPtr driver;
   scoped_ptr<Connection> connection =
       shell()->Connect("exe:application_manager_apptest_driver");
   connection->GetInterface(&driver);
 
   // 2. Wait for the target to connect to us. (via
   //    mojo:application_manager_apptests)
   base::MessageLoop::current()->Run();
 
-  uint32_t remote_id = mojom::Shell::kInvalidApplicationID;
+  uint32_t remote_id = mojom::Connector::kInvalidApplicationID;
   EXPECT_TRUE(connection->GetRemoteApplicationID(&remote_id));
-  EXPECT_NE(mojom::Shell::kInvalidApplicationID, remote_id);
+  EXPECT_NE(mojom::Connector::kInvalidApplicationID, remote_id);
 
   // 3. Validate that this test suite's URL was received from the application
   //    manager.
   EXPECT_TRUE(ContainsApplicationWithURL("mojo://mojo_shell_apptests/"));
 
   // 4. Validate that the right applications/processes were created.
   //    Note that the target process will be created even if the tests are
   //    run with --single-process.
   EXPECT_EQ(2u, applications().size());
   {
@@ skipping 12 matching lines @@
 
   driver.set_connection_error_handler(
       base::Bind(&ApplicationManagerAppTest::OnDriverQuit,
                  base::Unretained(this)));
   driver->QuitDriver();
   base::MessageLoop::current()->Run();
 }
 
 }  // namespace shell
 }  // namespace mojo