Allow native_viewport to create new native windows on demand on Android.

services/native_viewport/platform_viewport_stub.cc

Index: services/native_viewport/platform_viewport_stub.cc
diff --git a/services/native_viewport/platform_viewport_stub.cc b/services/native_viewport/platform_viewport_stub.cc
index 008abb574596e9bdf6e2ec22d611b875e9688c5b..081074b3c32c42e42f65f30b91767edde2c7c913 100644
--- a/services/native_viewport/platform_viewport_stub.cc
+++ b/services/native_viewport/platform_viewport_stub.cc
@@ -7,7 +7,9 @@
 namespace mojo {
 
 // static
-scoped_ptr<PlatformViewport> PlatformViewport::Create(Delegate* delegate) {
+scoped_ptr<PlatformViewport> PlatformViewport::Create(
+    mojo::ApplicationImpl* application_,
+    Delegate* delegate) {
   return PlatformViewportHeadless::Create(delegate);
 }