Expose the bluetooth address of the adapter.

This is needed for an extension API call:
chrome.experimental.bluetooth.getAddress

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/9826018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@128276 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/bluetooth/bluetooth_adapter.cc

@@ -114,6 +114,8 @@ void BluetoothAdapter::ChangeAdapter(const dbus::ObjectPath& adapter_path) {
       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
       GetProperties(object_path_);
 
+  address_ = properties->address.value();
+
   PoweredChanged(properties->powered.value());
   DiscoveringChanged(properties->discovering.value());
   DevicesChanged(properties->devices.value());
@@ -133,6 +135,7 @@ void BluetoothAdapter::RemoveAdapter() {
   ClearDevices();
 
   object_path_ = dbus::ObjectPath("");
+  address_.clear();
 
   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
                     AdapterPresentChanged(this, false));

chrome/browser/chromeos/bluetooth/bluetooth_adapter.h

@@ -91,6 +91,10 @@ class BluetoothAdapter : private BluetoothManagerClient::Observer,
   // is called, in the success case the callback is simply not called.
   typedef base::Callback<void()> ErrorCallback;
 
+  // The address of this adapter.  The address format is "XX:XX:XX:XX:XX:XX",
+  // where each XX is a hexadecimal number.
+  const std::string& address() const { return address_; }
+
   // Indicates whether the adapter is actually present on the system, for
   // the default adapter this indicates whether any adapter is present.
   bool IsPresent() const;
@@ -274,6 +278,9 @@ class BluetoothAdapter : private BluetoothManagerClient::Observer,
   bool track_default_;
   dbus::ObjectPath object_path_;
 
+  // Address of the adapter.
+  std::string address_;
+
   // Tracked adapter state, cached locally so we only send change notifications
   // to observers on a genuine change.
   bool powered_;