Make DOMString a newtype around String, rather than a typedef.

This should make it somewhat easier to experiment with alternative
representations in the future. To reduce churn, this commit leaves the String
field public, though.

Also, this will allow us to use the default String type to represent the IDL
USVString type, which explicitly forbids unpaired surrogates, ans as such is
a better match to the Rust String type.

1 files changed, 3 insertions, 3 deletions

diff --git a/components/script/dom/htmlimageelement.rs b/components/script/dom/htmlimageelement.rs
index c446034a299..098938c8285 100644
--- a/components/script/dom/htmlimageelement.rs
+++ b/components/script/dom/htmlimageelement.rs
@@ -79,7 +79,7 @@ impl Runnable for ImageResponseHandlerRunnable {
         // Fire image.onload
         let window = window_from_node(document.r());
         let event = Event::new(GlobalRef::Window(window.r()),
-                               "load".to_owned(),
+                               DOMString("load".to_owned()),
                                EventBubbles::DoesNotBubble,
                                EventCancelable::NotCancelable);
         event.fire(element.upcast());
@@ -146,7 +146,7 @@ impl HTMLImageElement {
                  width: Option<u32>,
                  height: Option<u32>) -> Fallible<Root<HTMLImageElement>> {
         let document = global.as_window().Document();
-        let image = HTMLImageElement::new("img".to_owned(), None, document.r());
+        let image = HTMLImageElement::new(DOMString("img".to_owned()), None, document.r());
         if let Some(w) = width {
             image.SetWidth(w);
         }
@@ -292,7 +292,7 @@ impl VirtualMethods for HTMLImageElement {
         match attr.local_name() {
             &atom!(src) => {
                 self.update_image(mutation.new_value(attr).map(|value| {
-                    ((**value).to_owned(), window_from_node(self).get_url())
+                    (DOMString((**value).to_owned()), window_from_node(self).get_url())
                 }));
             },
             _ => {},