GitLab

This fix sends a DeviceChanged notification to all the
BluetoothAdapter::Observer when a BluetoothDevice::Connect makes the
BluetoothDevice::IsConnecting property change.

BUG=231985
TEST=None

Review URL: https://chromiumcodereview.appspot.com/12374062

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195375 0039d316-1c4b-4281-b951-d872f2087c98