bluetooth: Invalidate services upon disconnection

third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp

Index: third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp
diff --git a/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp b/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp
index a42951710d219549bb72b51c08f52ac9371f3c33..7527109d5d84f654d2b19d0e1a33f7619afd3054 100644
--- a/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp
+++ b/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp
@@ -26,6 +26,9 @@ const char kGATTServerDisconnected[] =
     "GATT Server disconnected while retrieving characteristics.";
 const char kGATTServerNotConnected[] =
     "GATT Server is disconnected. Cannot retrieve characteristics.";
+const char kInvalidService[] =
+    "Service is no longer valid. Remember to retrieve the service again after "
+    "reconnecting.";
 
 }  // namespace
 
@@ -159,6 +162,11 @@ ScriptPromise BluetoothRemoteGATTService::getCharacteristicsImpl(
         DOMException::create(NetworkError, kGATTServerNotConnected));
   }
 
+  if (!device()->isValidService(m_webService->serviceInstanceID)) {
+    return ScriptPromise::rejectWithDOMException(
+        scriptState, DOMException::create(InvalidStateError, kInvalidService));
+  }
+
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
   ScriptPromise promise = resolver->promise();