bluetooth: Add tests for when frame reconnects during readValue

device/bluetooth/test/mock_bluetooth_device.cc

Index: device/bluetooth/test/mock_bluetooth_device.cc
diff --git a/device/bluetooth/test/mock_bluetooth_device.cc b/device/bluetooth/test/mock_bluetooth_device.cc
index 9315ff545117ca28eed98621618057aa87d7a008..6528a0407dfcd417b858e811ed2570eda2d6f171 100644
--- a/device/bluetooth/test/mock_bluetooth_device.cc
+++ b/device/bluetooth/test/mock_bluetooth_device.cc
@@ -88,4 +88,18 @@ BluetoothRemoteGattService* MockBluetoothDevice::GetMockService(
   return nullptr;
 }
 
+void MockBluetoothDevice::PushPendingCallback(const base::Closure& callback) {
+  pending_callbacks_.push(callback);
+}
+
+base::Closure MockBluetoothDevice::PopPendingCallback() {
+  base::Closure callback = pending_callbacks_.front();
+  pending_callbacks_.pop();
+  return callback;
+}
+
+bool MockBluetoothDevice::HasPendingCallback() {
+  return !pending_callbacks_.empty();
+}
+
 }  // namespace device