bluetooth: Use BluetoothUUID instead of string when sending uuids

content/browser/bluetooth/web_bluetooth_service_impl.h

Index: content/browser/bluetooth/web_bluetooth_service_impl.h
diff --git a/content/browser/bluetooth/web_bluetooth_service_impl.h b/content/browser/bluetooth/web_bluetooth_service_impl.h
index 2034cbbca0ca820b7171c5590f7bb9f0f61cc83e..9940f0f7b7a07b0bf45a609f5719bb4d9ee1e27a 100644
--- a/content/browser/bluetooth/web_bluetooth_service_impl.h
+++ b/content/browser/bluetooth/web_bluetooth_service_impl.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "base/optional.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/bluetooth/bluetooth_allowed_devices_map.h"
 #include "content/browser/bluetooth/cache_query_result.h"
@@ -101,12 +102,12 @@ class WebBluetoothServiceImpl : public blink::mojom::WebBluetoothService,
   void RemoteServerDisconnect(const mojo::String& device_id) override;
   void RemoteServerGetPrimaryService(
       const mojo::String& device_id,
-      const mojo::String& service_uuid,
+      const base::Optional<device::BluetoothUUID>& service_uuid,
       const RemoteServerGetPrimaryServiceCallback& callback) override;
   void RemoteServiceGetCharacteristics(
       const mojo::String& service_instance_id,
       blink::mojom::WebBluetoothGATTQueryQuantity quantity,
-      const mojo::String& characteristics_uuid,
+      const base::Optional<device::BluetoothUUID>& characteristics_uuid,
       const RemoteServiceGetCharacteristicsCallback& callback) override;
   void RemoteCharacteristicReadValue(
       const mojo::String& characteristic_instance_id,
@@ -130,7 +131,7 @@ class WebBluetoothServiceImpl : public blink::mojom::WebBluetoothService,
   // Should only be run after the services have been discovered for
   // |device_address|.
   void RemoteServerGetPrimaryServiceImpl(
-      const std::string& service_uuid,
+      const base::Optional<device::BluetoothUUID>& service_uuid,
       const RemoteServerGetPrimaryServiceCallback& callback,
       device::BluetoothDevice* device);