Support using a mock SDK with the resolver in code-transformers, and switch

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

Index: pkg/polymer/lib/src/build/script_compactor.dart
diff --git a/pkg/polymer/lib/src/build/script_compactor.dart b/pkg/polymer/lib/src/build/script_compactor.dart
index b633360cb27610da7432724910bb1394b32d6a52..9d2dd928cd8e6b0f9b722b7ee2c714f93fe7219e 100644
--- a/pkg/polymer/lib/src/build/script_compactor.dart
+++ b/pkg/polymer/lib/src/build/script_compactor.dart
@@ -45,7 +45,38 @@ class ScriptCompactor extends Transformer {
   final TransformOptions options;
 
   ScriptCompactor(this.options, {String sdkDir})
-      : resolvers = new Resolvers(sdkDir != null ? sdkDir : dartSdkDirectory);
+      // TODO(sigmund): consider restoring here a resolver that uses the real
+      // SDK once the analyzer is lazy and only an resolves what it needs:
+      //: resolvers = new Resolvers.fromSdkDirectory(
+      //    sdkDir != null ? sdkDir : dartSdkDirectory);
+      : resolvers = new Resolvers.fromMock({
+        'dart:core': '''

[Jennifer Messerly, 2014/06/04 04:17:39]

just curious, how was this list chosen?

[Siggi Cherem (dart-lang), 2014/06/04 21:25:19]

The list of libraries was a bit adhoc, I was adding as needed. I changed to now
use a minimal list and return an empty library if it wasn't specified.

As for the types in Core, I added a comment where this comes from. Basically:
 - types we rely on in polymer (both in deserialize & in the smoke queries)
 - types that the analyzer needs to run correctly.

+            library dart.core;
+            class Object {}
+
+            class String extends Object {}
+            class num extends Object {}
+            class int extends num {}
+            class double extends num {}
+            class List<V> extends Object {}
+            class Map<K, V> extends Object {}
+            class Set<V> extends Object {}
+            ''',
+        'dart:async': 'library dart.async;',
+        'dart:html': '''
+            library dart.html;
+            class HtmlElement {}
+            ''',
+        'dart:math': 'library dart.math;',
+        'dart:collection': 'library dart.collection;',
+        'dart:js': 'library dart.js;',
+        'dart:svg': 'library dart.svg;',
+        'dart:convert': 'library dart.convert;',
+        'dart:mirrors': 'library dart.mirrors;',
+        'dart:isolate': 'library dart.isolate;',
+      });
+
+
 
   /// Only run on entry point .html files.
   // TODO(nweiz): This should just take an AssetId when barback <0.13.0 support