Implement WebBluetooth descriptor.readValue()

third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js

Index: third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js
diff --git a/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js b/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js
new file mode 100644
index 0000000000000000000000000000000000000000..7c935051e314b2f2dca0d02e9ccc16817e37162a
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js
@@ -0,0 +1,24 @@
+'use strict';
+promise_test(
+    () => {
+        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 => characteristic.getDescriptor(
+                    'bad3ec61-3cc3-4954-9702-7977df514114'))
+            .then(descriptor => {
+              return assert_promise_rejects_with_message(
+                  descriptor.CALLS([readValue()]),
+                  new DOMException(
+                      'readValue() called on blocklisted object marked exclude-reads. ' +
+                          'https://goo.gl/4NeimX',
+                      'SecurityError'));
+            })},
+    'Attempt to call FUNCTION_NAME on a blocked descriptor must generate a SecurityError');