Update corelib/ and lib/ to use the new try-catch syntax.

lib/dom/templates/html/dart2js/impl_Window.darttemplate

Index: lib/dom/templates/html/dart2js/impl_Window.darttemplate
diff --git a/lib/dom/templates/html/dart2js/impl_Window.darttemplate b/lib/dom/templates/html/dart2js/impl_Window.darttemplate
index 77c215c3f3fc6fa51120b6e36ebff4227189a975..627f0b7b74baa056e906a6ff841ed2da121aa425 100644
--- a/lib/dom/templates/html/dart2js/impl_Window.darttemplate
+++ b/lib/dom/templates/html/dart2js/impl_Window.darttemplate
@@ -69,7 +69,7 @@ class $CLASSNAME$EXTENDS$IMPLEMENTS native "@*DOMWindow" {
     // stub on Object.prototype and throws an exception.
     try {
       return thing is Location;
-    } catch (var e) {
+    } catch (e) {
       return false;
     }
   }