digitalgoods:Remove Play Billing URL from blink.

This should be checked by the implementations in Android and CrOS instead.

Bug: 1146394
Change-Id: I16985812c281fa922a95394890cb75bbaf2c17a8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2524624
Commit-Queue: Glen Robertson <glenrob@chromium.org>
Commit-Queue: Alan Cutter <alancutter@chromium.org>
Auto-Submit: Glen Robertson <glenrob@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825261}

third_party/blink/renderer/modules/payments/goods/dom_window_digital_goods.cc

@@ -17,8 +17,6 @@ namespace {
 
 using payments::mojom::blink::CreateDigitalGoodsResponseCode;
 
-const char known_payment_method_[] = "https://play.google.com/billing";
-
 void OnCreateDigitalGoodsResponse(
     ScriptPromiseResolver* resolver,
     CreateDigitalGoodsResponseCode code,
@@ -58,10 +56,6 @@ ScriptPromise DOMWindowDigitalGoods::GetDigitalGoodsService(
     resolver->Resolve(v8::Null(script_state->GetIsolate()));
     return promise;
   }
-  if (payment_method != known_payment_method_) {
-    resolver->Resolve(v8::Null(script_state->GetIsolate()));
-    return promise;
-  }
 
   // TODO: Bind only on platforms where an implementation exists.
   if (!mojo_service_) {