bluetooth: Remove non const references from BluetoothDispatcherHost

content/browser/bluetooth/bluetooth_dispatcher_host.h

Index: content/browser/bluetooth/bluetooth_dispatcher_host.h
diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.h b/content/browser/bluetooth/bluetooth_dispatcher_host.h
index 5fe1f90a00bdb32f6b7500ee6ca22cac975be6e4..6f8dc21630998fdb29c4887bcb324be6130061a0 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.h
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.h
@@ -207,20 +207,17 @@ class CONTENT_EXPORT BluetoothDispatcherHost final
   // was already recorded and since there renderer crashed there is no need to
   // send a response.
 
-  // Queries the platform cache for a Device with |device_id|. If
-  // successful the device will be in result.device
-  void QueryCacheForDevice(const std::string& device_id,
-                           CacheQueryResult& result);
-  // Queries the platform cache for a Service with |service_instance_id|.
-  // If successfull the service will be in result.service.
-  void QueryCacheForService(const std::string& service_instance_id,
-                            CacheQueryResult& result);
+  // Queries the platform cache for a Device with |device_id|. Fills in the
+  // |outcome| field and the |device| field if successful.
+  CacheQueryResult QueryCacheForDevice(const std::string& device_id);
+  // Queries the platform cache for a Service with |service_instance_id|. Fills
+  // in the |outcome| field, and |device| and |service| fields if successful.
+  CacheQueryResult QueryCacheForService(const std::string& service_instance_id);
   // Queries the platform cache for a characteristic with
-  // |characteristic_instance_id|. If successfull the characteristic will be in
-  // result.characteristic.
-  void QueryCacheForCharacteristic(
-      const std::string& characteristic_instance_id,
-      CacheQueryResult& result);
+  // |characteristic_instance_id|. Fills in the |outcome| field, and |device|,
+  // |service| and |characteristic| fields if successful.
+  CacheQueryResult QueryCacheForCharacteristic(
+      const std::string& characteristic_instance_id);
 
   // Returns true if all services have been discovered for the device.
   // When the host gets a ServiceChanged indication, it automatically