Bluetooth UI: A "connecting" overlay is shown after enter a pin code.

chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc

Index: chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc b/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc
index 4f32052c32bed05b09e6e2a2da79aa4d1fc2980f..6e4c70df44bb96c41d1ca6a034678ca051ed0849 100644
--- a/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc
+++ b/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.cc
@@ -40,6 +40,7 @@ const char kForgetCommand[] = "forget";
 // |SendDeviceNotification| may include a pairing parameter whose value
 // is one of the following constants instructing the UI to perform a certain
 // action.
+const char kStartConnecting[] = "bluetoothStartConnecting";
 const char kEnterPinCode[] = "bluetoothEnterPinCode";
 const char kEnterPasskey[] = "bluetoothEnterPasskey";
 const char kRemotePinCode[] = "bluetoothRemotePinCode";
@@ -264,6 +265,7 @@ void BluetoothOptionsHandler::UpdateDeviceCallback(
       args->GetString(kUpdateDeviceAuthTokenIndex, &auth_token);
 
       if (device->ExpectingPinCode()) {
+        DeviceConnecting(device);
         // PIN Code is an array of 1 to 16 8-bit bytes, the usual
         // interpretation, and the one shared by BlueZ, is a UTF-8 string
         // of as many characters that will fit in that space, thus we
@@ -271,6 +273,7 @@ void BluetoothOptionsHandler::UpdateDeviceCallback(
         DVLOG(1) << "PIN Code supplied: " << address << ": " << auth_token;
         device->SetPinCode(auth_token);
       } else if (device->ExpectingPasskey()) {
+        DeviceConnecting(device);
         // Passkey is a numeric in the range 0-999999, in this case the
         // JavaScript code should have ensured the auth token string only
         // contains digits so a simple conversion is sufficient. In the
@@ -492,5 +495,13 @@ void BluetoothOptionsHandler::DeviceRemoved(device::BluetoothAdapter* adapter,
       address);
 }
 
+void BluetoothOptionsHandler::DeviceConnecting(
+    device::BluetoothDevice* device) {
+  DCHECK(device);
+  DictionaryValue params;
+  params.SetString("pairing", kStartConnecting);
+  SendDeviceNotification(device, &params);
+}
+
 }  // namespace options
 }  // namespace chromeos