Plumbs through screen size and scale factor to html_viewer

components/native_viewport/native_viewport_impl.cc

Index: components/native_viewport/native_viewport_impl.cc
diff --git a/components/native_viewport/native_viewport_impl.cc b/components/native_viewport/native_viewport_impl.cc
index 1b1e548df7aad8416a159b9f3acdc44806c2f58f..2f85500088553deddbbbaca9b657e83e1ddf9dfe 100644
--- a/components/native_viewport/native_viewport_impl.cc
+++ b/components/native_viewport/native_viewport_impl.cc
@@ -99,7 +99,9 @@ void NativeViewportImpl::OnMetricsChanged(mojo::ViewportMetricsPtr metrics) {
 }
 
 void NativeViewportImpl::OnAcceleratedWidgetAvailable(
-    gfx::AcceleratedWidget widget) {
+    gfx::AcceleratedWidget widget,
+    float device_pixel_ratio) {
+  metrics_->device_pixel_ratio = device_pixel_ratio;
   context_provider_.SetAcceleratedWidget(widget);
   // TODO: The metrics here might not match the actual window size on android
   // where we don't know the actual size until the first OnMetricsChanged call.