Remove TODOs that are out of date.

device/bluetooth/bluetooth_remote_gatt_characteristic_android.h

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
index c0606b420c7ae2c6bf6adffeda5d320bd660faa4..36b6dc87fb5361271fb7c3106f15ecd92c6c0123 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
@@ -24,9 +24,6 @@ class BluetoothRemoteGattServiceAndroid;
 // BluetoothRemoteGattCharacteristicAndroid along with its owned Java class
 // org.chromium.device.bluetooth.ChromeBluetoothRemoteGattCharacteristic
 // implement BluetootGattCharacteristic.
-//
-// TODO(crbug.com/551634): When notifications are enabled characteristic updates
-// should call observers' GattCharacteristicValueChanged.
 class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattCharacteristicAndroid
     : public BluetoothRemoteGattCharacteristic {
  public:
@@ -66,7 +63,7 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattCharacteristicAndroid
       const std::string& identifier) const override;
   void ReadRemoteCharacteristic(const ValueCallback& callback,
                                 const ErrorCallback& error_callback) override;
-  void WriteRemoteCharacteristic(const std::vector<uint8_t>& new_value,
+  void WriteRemoteCharacteristic(const std::vector<uint8_t>& value,
                                  const base::Closure& callback,
                                  const ErrorCallback& error_callback) override;