Implement WebBluetooth getDescriptor[s]

third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h

Index: third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h
diff --git a/third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h b/third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h
index 13da332c1627ae53a12a5331fe94792a2f19ecd1..bdba86f768fc799be9d43451078d15a8791e358e 100644
--- a/third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h
+++ b/third_party/WebKit/public/platform/modules/bluetooth/WebBluetooth.h
@@ -15,9 +15,11 @@ namespace blink {
 
 class WebBluetoothDevice;
 class WebBluetoothRemoteGATTCharacteristic;
+class WebBluetoothRemoteGATTDescriptor;
 
 struct WebBluetoothDeviceInit;
 struct WebBluetoothRemoteGATTCharacteristicInit;
+struct WebBluetoothRemoteGATTDescriptorInit;
 struct WebBluetoothRemoteGATTService;
 struct WebRequestDeviceOptions;
 
@@ -41,6 +43,11 @@ using WebBluetoothGetCharacteristicsCallbacks = WebCallbacks<
     const WebVector<WebBluetoothRemoteGATTCharacteristicInit*>&,
     int32_t /* Corresponds to WebBluetoothResult in web_bluetooth.mojom */>;
 
+// Success and failure callbacks for getDescriptor(s).
+using WebBluetoothGetDescriptorsCallbacks = WebCallbacks<
+    const WebVector<WebBluetoothRemoteGATTDescriptorInit*>&,
+    int32_t /* Corresponds to WebBluetoothResult in web_bluetooth.mojom */>;
+
 // Success and failure callbacks for readValue.
 using WebBluetoothReadValueCallbacks = WebCallbacks<
     const WebVector<uint8_t>&,
@@ -96,15 +103,32 @@ class WebBluetooth {
   // BluetoothRemoteGATTCharacteristic methods:
   // See
   // https://webbluetoothchrome.github.io/web-bluetooth/#bluetoothgattcharacteristic
-  virtual void readValue(const WebString& characteristicInstanceID,
-                         WebBluetoothReadValueCallbacks*) {}
-  virtual void writeValue(const WebString& characteristicInstanceID,
-                          const WebVector<uint8_t>& value,
-                          WebBluetoothWriteValueCallbacks*) {}
+  virtual void characteristicReadValue(
+      const WebString& characteristicInstanceID,
+      WebBluetoothReadValueCallbacks*) {}
+  virtual void characteristicWriteValue(
+      const WebString& characteristicInstanceID,
+      const WebVector<uint8_t>& value,
+      WebBluetoothWriteValueCallbacks*) {}
   virtual void startNotifications(const WebString& characteristicInstanceID,
                                   WebBluetoothNotificationsCallbacks*) {}
   virtual void stopNotifications(const WebString& characteristicInstanceID,
                                  WebBluetoothNotificationsCallbacks*) {}
+  virtual void getDescriptors(
+      const WebString& serviceInstanceID,
+      // Corresponds to WebBluetoothGATTQueryQuantity in web_bluetooth.mojom
+      int32_t quantity,
+      const WebString& descriptorsUUID,
+      WebBluetoothGetDescriptorsCallbacks*) = 0;
+
+  // BluetoothRemoteGATTDescriptor methods:
+  // See
+  // https://webbluetoothchrome.github.io/web-bluetooth/#bluetoothgattdescriptor
+  virtual void descriptorReadValue(const WebString& descriptorInstanceID,
+                                   WebBluetoothReadValueCallbacks*) {}
+  virtual void descriptorWriteValue(const WebString& descriptorInstanceID,
+                                    const WebVector<uint8_t>& value,
+                                    WebBluetoothWriteValueCallbacks*) {}
 
   // Called when addEventListener is called on a characteristic.
   virtual void registerCharacteristicObject(