Implement the Blink side of RequestDeviceOptions.

public/platform/modules/bluetooth/WebBluetooth.h

Index: public/platform/modules/bluetooth/WebBluetooth.h
diff --git a/public/platform/modules/bluetooth/WebBluetooth.h b/public/platform/modules/bluetooth/WebBluetooth.h
index ef959057e3abaf28907dbcdb46269235bbb0c937..5d9a9f730f1c11ae39a59051e23fcce3b0e8c7ac 100644
--- a/public/platform/modules/bluetooth/WebBluetooth.h
+++ b/public/platform/modules/bluetooth/WebBluetooth.h
@@ -16,6 +16,7 @@ struct WebBluetoothError;
 struct WebBluetoothGATTCharacteristic;
 struct WebBluetoothGATTRemoteServer;
 struct WebBluetoothGATTService;
+struct WebRequestDeviceOptions;
 
 // Success and failure callbacks for requestDevice.
 // WebBluetoothDevice and WebBluetoothError object ownership is transferred.
@@ -44,7 +45,10 @@ public:
     // BluetoothDiscovery Methods:
     // See https://webbluetoothcg.github.io/web-bluetooth/#idl-def-bluetoothdiscovery
     // WebBluetoothRequestDeviceCallbacks ownership transferred to the client.
-    virtual void requestDevice(WebBluetoothRequestDeviceCallbacks*) = 0;
+    virtual void requestDevice(const WebRequestDeviceOptions&, WebBluetoothRequestDeviceCallbacks* callbacks) { requestDevice(callbacks); }
+    // TODO(jyasskin): Remove this overload and make the other abstract after

[scheib, 2015/06/15 18:08:11]

It's OK to leave the default implementations. I used to push more on this but
other Blink members convinced me the patch churn is silly until we merge repos.

[Jeffrey Yasskin, 2015/06/15 19:19:19]

I definitely want to remove the second overload, and if I'm doing that anyway, I
may as well make it abstract. But I can also leave it defaulted in
https://codereview.chromium.org/1174843002/diff/20001/public/platform/modules...
if you prefer that.

[scheib, 2015/06/15 20:15:15]

Not a strong preference, but as you can see the newly added code goes for
convenience, leaving default implementations.

+    // https://codereview.chromium.org/1172853004/ lands.
+    virtual void requestDevice(WebBluetoothRequestDeviceCallbacks*) { }
 
     // BluetoothDevice methods:
     // See https://webbluetoothcg.github.io/web-bluetooth/#idl-def-bluetoothdevice