Big merge from experimental to bleeding edge.

sdk/lib/async/async_sources.gypi

Index: sdk/lib/async/async_sources.gypi
diff --git a/sdk/lib/collection/collection_sources.gypi b/sdk/lib/async/async_sources.gypi
similarity index 54%
copy from sdk/lib/collection/collection_sources.gypi
copy to sdk/lib/async/async_sources.gypi
index 9eea155ca7c133e0afe0b51b7c2a35d95d72a0bf..b0f4fe8e7aeda69d698efd755a3d99c56248ffa6 100644
--- a/sdk/lib/collection/collection_sources.gypi
+++ b/sdk/lib/async/async_sources.gypi
@@ -5,10 +5,17 @@
 # This file contains all sources for the dart:collection library.
 {
   'sources': [
-    'arrays.dart',
-    'collections.dart',
-    'maps.dart',
-    'splay_tree.dart',
+    'async_error.dart',
+    'future.dart',
+    'future_impl.dart',
+    'merge_stream.dart',
+    'signal.dart',
+    'stream.dart',
+    'stream_controller.dart',
+    'stream_impl.dart',
+    'stream_pipe.dart',
+    'string_transform.dart',
+    'timer.dart',
   ],
 }