chrome.bluetooth API improvements.

device/bluetooth/bluetooth_device_chromeos.cc

Index: device/bluetooth/bluetooth_device_chromeos.cc
diff --git a/device/bluetooth/bluetooth_device_chromeos.cc b/device/bluetooth/bluetooth_device_chromeos.cc
index a7c7b83f10f7918fb3cc3a0e0536a773de5c617e..6fe7ca129b87f9ddc3056ce327b34877bf016fd0 100644
--- a/device/bluetooth/bluetooth_device_chromeos.cc
+++ b/device/bluetooth/bluetooth_device_chromeos.cc
@@ -353,7 +353,7 @@ void BluetoothDeviceChromeOS::ConnectToService(
 void BluetoothDeviceChromeOS::ConnectToProfile(
     device::BluetoothProfile* profile,
     const base::Closure& callback,
-    const ErrorCallback& error_callback) {
+    const ConnectToProfileErrorCallback& error_callback) {
   BluetoothProfileChromeOS* profile_chromeos =
       static_cast<BluetoothProfileChromeOS*>(profile);
   VLOG(1) << object_path_.value() << ": Connecting profile: "
@@ -581,7 +581,7 @@ void BluetoothDeviceChromeOS::OnConnectProfileError(
   VLOG(1) << object_path_.value() << ": Profile connection failed: "
           << profile_chromeos->uuid() << ": "
           << error_name << ": " << error_message;
-  error_callback.Run();
+  error_callback.Run(error_message);
 }
 
 }  // namespace chromeos