Reusing base::IdType<...> to implement SurfaceId.

components/html_viewer/html_frame.cc

Index: components/html_viewer/html_frame.cc
diff --git a/components/html_viewer/html_frame.cc b/components/html_viewer/html_frame.cc
index bee05e7bd6e9299d52bba0d54efd2391104bc5d2..3428b0841793a83118268992c59d8bbb6dbcec2d 100644
--- a/components/html_viewer/html_frame.cc
+++ b/components/html_viewer/html_frame.cc
@@ -650,9 +650,10 @@ void HTMLFrame::SwapToRemote() {
           cc::SurfaceLayer::Create(cc_blink::WebLayerImpl::LayerSettings(),
                                    base::Bind(&SatisfyCallback),
                                    base::Bind(&RequireCallback));
-    surface_layer_->SetSurfaceId(cc::SurfaceId(owned_window_->window()->id()),
-                                 global_state()->device_pixel_ratio(),
-                                 owned_window_->window()->bounds().size());
+    surface_layer_->SetSurfaceId(
+        cc::SurfaceId::FromUnsafeValue(owned_window_->window()->id()),
+        global_state()->device_pixel_ratio(),
+        owned_window_->window()->bounds().size());
 
     web_layer_.reset(new cc_blink::WebLayerImpl(surface_layer_));
   }
@@ -1044,9 +1045,10 @@ void HTMLFrame::frameRectsChanged(const blink::WebRect& frame_rect) {
   if (!surface_layer_)
     return;
 
-  surface_layer_->SetSurfaceId(cc::SurfaceId(owned_window_->window()->id()),
-                               global_state()->device_pixel_ratio(),
-                               owned_window_->window()->bounds().size());
+  surface_layer_->SetSurfaceId(
+      cc::SurfaceId::FromUnsafeValue(owned_window_->window()->id()),
+      global_state()->device_pixel_ratio(),
+      owned_window_->window()->bounds().size());
 }
 
 }  // namespace mojo