Reland: Refactor DBusThreadManager to split away BT clients.

This is a reland of

This CL doesn't change any of the code except for merge and lint changes.

The original CL was triggering a test crash in Valgrind. On this patch,
I've run Valgrind multiple times locally and also additionally run TSan.
Since I am seeing no failures, after talking to glider@ (who works on
Valgrind), I'm attempting to re-land this CL.

TBR=armansito@chromium.org, glider@chromium.org, isherman@chromium.org, oshima@chromium.org, sky@chromium.org, stevenjb@chromium.org
BUG=None.

Committed: c56b94daaf6513891e7da3094ab5054ffbd6262
Cr-Commit-Position: refs/heads/master@{#357707}

Review URL: https://codereview.chromium.org/1411793010

Cr-Commit-Position: refs/heads/master@{#357976}

1 files changed, 120 insertions, 0 deletions

diff --git a/device/bluetooth/dbus/bluetooth_profile_service_provider.h b/device/bluetooth/dbus/bluetooth_profile_service_provider.h
new file mode 100644
index 0000000..f2db22c
--- /dev/null
+++ b/device/bluetooth/dbus/bluetooth_profile_service_provider.h
@@ -0,0 +1,120 @@
+// Copyright 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.
+
+#ifndef DEVICE_BLUETOOTH_DBUS_BLUETOOTH_PROFILE_SERVICE_PROVIDER_H_
+#define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_PROFILE_SERVICE_PROVIDER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "dbus/bus.h"
+#include "dbus/file_descriptor.h"
+#include "dbus/object_path.h"
+#include "device/bluetooth/bluetooth_export.h"
+
+namespace bluez {
+
+// BluetoothProfileServiceProvider is used to provide a D-Bus object that the
+// Bluetooth daemon can communicate with to connect application profiles.
+//
+// Instantiate with a chosen D-Bus object path and delegate object, and pass
+// the D-Bus object path as the |agent_path| argument to the
+// chromeos::BluetoothProfileManagerClient::RegisterProfile() method.
+//
+// When an incoming profile connection occurs, or after initiating a connection
+// using the chromeos::BluetoothDeviceClient::ConnectProfile() method, the
+// Bluetooth daemon will make calls to this profile object and they will be
+// passed on to your Delegate object for handling. Responses should be returned
+// using the callbacks supplied to those methods.
+class DEVICE_BLUETOOTH_EXPORT BluetoothProfileServiceProvider {
+ public:
+  // Interface for reacting to profile requests.
+  class Delegate {
+   public:
+    virtual ~Delegate() {}
+
+    // Possible status values that may be returned to callbacks on a new
+    // connection or a requested disconnection. Success indicates acceptance,
+    // reject indicates the user rejected or denied the request; cancelled
+    // means the user cancelled the request without confirming either way.
+    enum Status { SUCCESS, REJECTED, CANCELLED };
+
+    // Connection-specific options.
+    struct DEVICE_BLUETOOTH_EXPORT Options {
+      Options() {}
+      ~Options() {}
+
+      // Profile version.
+      uint16 version;
+
+      // Profile features.
+      uint16 features;
+    };
+
+    // The ConfirmationCallback is used for methods which require confirmation;
+    // it should be called with one argument, the |status| of the request
+    // (success, rejected or cancelled).
+    typedef base::Callback<void(Status)> ConfirmationCallback;
+
+    // This method will be called when the profile is unregistered from the
+    // Bluetooth daemon, generally at shutdown or at the applications' request.
+    // It may be used to perform cleanup tasks. This corresponds to the
+    // org.bluez.Profile1.Release method and is renamed to avoid a conflict
+    // with base::Refcounted<T>.
+    virtual void Released() = 0;
+
+    // This method will be called when a profile connection to the device
+    // with object path |device_path| is established. |callback| must be called
+    // to confirm the connection, or indicate rejection or cancellation.
+    //
+    // A file descriptor for the connection socket is provided in |fd|, and
+    // details about the specific implementation of the profile in |options|.
+    //
+    // IMPORTANT: Ownership of the file descriptor object |fd| is passed to
+    // the delegate by this call. The delegate is responsible for checking the
+    // validity of |fd| on a thread where I/O is permitted before taking the
+    // value. If the value is not taken, the file descriptor is closed.
+    //
+    // Ownership of |options| is NOT passed so information out of it must be
+    // copied if required.
+    virtual void NewConnection(const dbus::ObjectPath& device_path,
+                               scoped_ptr<dbus::FileDescriptor> fd,
+                               const Options& options,
+                               const ConfirmationCallback& callback) = 0;
+
+    // This method will be called when a profile connection to the device
+    // with object path |device_path| is disconnected. Any file descriptors
+    // owned by the service should be cleaned up and |callback| called to
+    // confirm, or indicate rejection or cancellation of the disconnection.
+    virtual void RequestDisconnection(const dbus::ObjectPath& device_path,
+                                      const ConfirmationCallback& callback) = 0;
+
+    // This method will be called by the Bluetooth daemon to indicate that
+    // a profile request failed before a reply was returned from the device.
+    virtual void Cancel() = 0;
+  };
+
+  virtual ~BluetoothProfileServiceProvider();
+
+  // Creates the instance where |bus| is the D-Bus bus connection to export
+  // the object onto, |object_path| is the object path that it should have
+  // and |delegate| is the object to which all method calls will be passed
+  // and responses generated from.
+  static BluetoothProfileServiceProvider* Create(
+      dbus::Bus* bus,
+      const dbus::ObjectPath& object_path,
+      Delegate* delegate);
+
+ protected:
+  BluetoothProfileServiceProvider();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BluetoothProfileServiceProvider);
+};
+
+}  // namespace bluez
+
+#endif  // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_PROFILE_SERVICE_PROVIDER_H_