Support transition between chrome and user mode console

chrome/browser/chromeos/dbus/console_service_provider.h

+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_DBUS_CONSOLE_SERVICE_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_DBUS_CONSOLE_SERVICE_PROVIDER_H_
+

[stevenjb, 2014/11/03 16:35:42]

#Include <string>

[dsodman, 2014/11/04 05:19:40]

Done.

+#include "base/bind.h"
+#include "chrome/browser/chromeos/dbus/cros_dbus_service.h"
+#include "dbus/exported_object.h"
+#include "dbus/message.h"

[stevenjb, 2014/11/03 16:35:41]

#include "base/memory/weak_ptr.h"

[dsodman, 2014/11/04 05:19:40]

Done.

+
+namespace dbus {
+class MethodCall;
+class Response;
+}
+
+namespace chromeos {
+
+// This class provides an api for external apps to notify
+// chrome that it should release control of the display server.
+// The main client is the console application.   This can
+// also be used by crouton to take over the display.
+class ConsoleServiceProvider
+    : public CrosDBusService::ServiceProviderInterface {
+ public:
+  ConsoleServiceProvider();
+  virtual ~ConsoleServiceProvider();

[stevenjb, 2014/11/03 16:35:42]

~ConsoleServiceProvider() override;

[dsodman, 2014/11/04 05:19:40]

Done.

+
+  void Start(scoped_refptr<dbus::ExportedObject> exported_object) override;

[stevenjb, 2014/11/03 16:35:42]

Comment above: // ServiceProviderInterface

[dsodman, 2014/11/04 05:19:40]

Done.

+
+ private:
+  // This method will get called when a external process calls the dbus
+  // method LibCrosService.ActivateConsole.  The method receives a boolean
+  // value which is true when chrome is being asked to release control
+  // of the display so that console can take over.  It will be false
+  // otherwise.
+  void ActivateConsole(dbus::MethodCall* method_call,
+                       dbus::ExportedObject::ResponseSender response_sender);
+
+  // This method is called when a dbus method is exported.  If the export of the
+  // method is successful, |success| will be true.  It will be false
+  // otherwise.
+  void OnExported(const std::string& interface_name,
+                  const std::string& method_name,
+                  bool success);
+
+  base::WeakPtrFactory<ConsoleServiceProvider> weak_ptr_factory_;

[stevenjb, 2014/11/03 16:35:41]

nit: blank line

[dsodman, 2014/11/04 05:19:40]

Done.

+  DISALLOW_COPY_AND_ASSIGN(ConsoleServiceProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_DBUS_CONSOLE_SERVICE_PROVIDER_H_