bluetooth: Improve error message for retrieving Descriptors when disconnecting

third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html

Index: third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html
diff --git a/third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html b/third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html
index 044ffee6a78ecc69a81ee84944ad2d6b129876b2..849e4b0d118af281881e1580b6fade51c9eff556 100644
--- a/third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html
+++ b/third_party/WebKit/LayoutTests/bluetooth/characteristic/getDescriptor/gen-descriptor-garbage-collection-ran-during-success.html
@@ -8,24 +8,25 @@
 promise_test(() => {
   let promise;
   return setBluetoothFakeAdapter('DisconnectingHealthThermometerAdapter')
-    .then(() => requestDeviceWithKeyDown({
-      filters: [{services: ['health_thermometer']}]}))
-    .then(device => device.gatt.connect())
-    .then(gattServer => gattServer.getPrimaryService('health_thermometer'))
-    .then(service => service.getCharacteristic('measurement_interval'))
-    .then(characteristic => {
-      promise = assert_promise_rejects_with_message(
-        characteristic.getDescriptor(user_description.name),
-        new DOMException(
-          'GATT Server is disconnected. Cannot perform GATT operations. ' +
-          '(Re)connect first with `device.gatt.connect`.',
-          'NetworkError'));
-      // Disconnect called to clear attributeInstanceMap and allow the
-      // object to get garbage collected.
-      characteristic.service.device.gatt.disconnect();
-    })
-    .then(runGarbageCollection)
-    .then(() => promise);
+      .then(
+          () => requestDeviceWithKeyDown(
+              {filters: [{services: ['health_thermometer']}]}))
+      .then(device => device.gatt.connect())
+      .then(gattServer => gattServer.getPrimaryService('health_thermometer'))
+      .then(service => service.getCharacteristic('measurement_interval'))
+      .then(characteristic => {
+        promise = assert_promise_rejects_with_message(
+            characteristic.getDescriptor(user_description.name),
+            new DOMException(
+                'GATT Server is disconnected. Cannot retrieve descriptors. ' +
+                    '(Re)connect first with `device.gatt.connect`.',
+                'NetworkError'));
+        // Disconnect called to clear attributeInstanceMap and allow the
+        // object to get garbage collected.
+        characteristic.service.device.gatt.disconnect();
+      })
+      .then(runGarbageCollection)
+      .then(() => promise);
 }, 'Garbage Collection ran during a getDescriptor call that succeeds. ' +
    'Should not crash.');