Link to stable-errors site from pub-build messages on the command line.

pkg/polymer/lib/src/build/polyfill_injector.dart

Index: pkg/polymer/lib/src/build/polyfill_injector.dart
diff --git a/pkg/polymer/lib/src/build/polyfill_injector.dart b/pkg/polymer/lib/src/build/polyfill_injector.dart
index 36d830361329539169792ad88cc0bf355a4bd80a..1b8872835956e18252aaa7aa245b9b7a4cbe8e1d 100644
--- a/pkg/polymer/lib/src/build/polyfill_injector.dart
+++ b/pkg/polymer/lib/src/build/polyfill_injector.dart
@@ -34,7 +34,8 @@ class PolyfillInjector extends Transformer with PolymerTransformer {
 
   Future apply(Transform transform) {
     var logger = new BuildLogger(transform,
-        convertErrorsToWarnings: !options.releaseMode);
+        convertErrorsToWarnings: !options.releaseMode,
+        detailsUri: 'http://goo.gl/5HPeuP');
     return readPrimaryAsHtml(transform, logger).then((document) {
       bool webComponentsFound = false;
       Element dartJs;