Service Worker: Add Clients.get(id)

third_party/WebKit/Source/modules/serviceworkers/Clients.idl

Index: third_party/WebKit/Source/modules/serviceworkers/Clients.idl
diff --git a/third_party/WebKit/Source/modules/serviceworkers/Clients.idl b/third_party/WebKit/Source/modules/serviceworkers/Clients.idl
index d15694ba2ac9255df3434704e81a9980dc54c7f4..cb632216015687c1f458494b6cc1146e9e3f7513 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/Clients.idl
+++ b/third_party/WebKit/Source/modules/serviceworkers/Clients.idl
@@ -8,6 +8,7 @@
     GarbageCollected,
     ImplementedAs=ServiceWorkerClients,
 ] interface Clients {
+    [CallWith=ScriptState] Promise<any> get(DOMString id);

[zino, 2016/01/04 09:05:27]

This is webexposed.
So, you need to send a intent to implement and ship[1] to blink-dev and receive
lgtm x 3 from API owners.
If you are already done, please leave the link to CL description.

Also, I think it's better to add a runtime flag for this feature.

http://www.chromium.org/blink#TOC-Web-Platform-Changes:-Process

     [CallWith=ScriptState] Promise<sequence<Client>> matchAll(optional ClientQueryOptions options);
     [RuntimeEnabled=ServiceWorkerClientAttributes, CallWith=ScriptState] Promise<WindowClient?> openWindow(USVString url);
     [CallWith=ScriptState] Promise<void> claim();