Add a private Bluetooth API to connect to the SDP service on a remote device (ChromeOS only).

BUG=387122
TEST=
  1. Create an app that can call easyUnlockPrivate APIs.
  2. Call chrome.easyUnlockPrivate.seekBluetoothDeviceByAddress(),
     passing in the Bluetooth address of an unpaired device.
  3. The connection should succeed, and the DeviceAdded callback should be called.

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Review URL: https://codereview.chromium.org/404543006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286309 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed