Added VMLibraryHooks setup for Dartium to support resolvePackageUri.

runtime/bin/builtin.dart

Index: runtime/bin/builtin.dart
diff --git a/runtime/bin/builtin.dart b/runtime/bin/builtin.dart
index ceba8cd0348e0d73bccb9fd101fe69ce39ba22e8..15fc98e68a57fbeea97ea062297c046fd394bc92 100644
--- a/runtime/bin/builtin.dart
+++ b/runtime/bin/builtin.dart
@@ -343,6 +343,18 @@ _setupHooks() {
   VMLibraryHooks.resolvePackageUriFuture = _resolvePackageUriFuture;
 }
 
+// Class used by Dartium to setup VMLibraryHooks.
+class DartiumSetup {
+  static Uri resolvePackageUri(String resolvedUri) native "Utils_resolvePackageUri";
+
+  static Uri _resolveUri(Uri packageUri) => resolvePackageUri(packageUri.toString());
+
+  static void _setupHooks() {
+    _setupCompleted = true;
+    VMLibraryHooks.resolvePackageUriFuture = _resolveUri;
+  }
+}

[siva, 2017/01/06 21:33:43]

Why does this class have to be in builtin.dart?
It does not seem to use anything from within this library.

This could easily be in a dartium specific library like html or js_interop.

[terry, 2017/01/06 21:41:17]

I need to get to VMLibraryHooks which is in dart:_internal (its part of
internal_patch.dart)

How do I get to that?

Maybe I could try to fetch the VMLibraryHooks class in dart:_internal then set
the static field for VMLibraryHooks.resolvePackageUriFuture to point to my
Dartium method?

I can try doing that.

[siva, 2017/01/06 21:42:53]

import 'dart:internal'; should get you access to that class

+
 // Handling of Resource class by dispatching to the load port.
 Future<List<int>> _resourceReadAsBytes(Uri uri) async {
   List response = await _makeLoaderRequest(_Dart_kResourceLoad, uri.toString());