Include new corelib/unified dir in sdk for dart2js

tools/create_sdk.py

Index: tools/create_sdk.py
diff --git a/tools/create_sdk.py b/tools/create_sdk.py
index a3ad5b5444033e12bb6da170949fc701147fb39b..2667458e1c64e0f4af9a10b537c26d2b599e013f 100755
--- a/tools/create_sdk.py
+++ b/tools/create_sdk.py
@@ -98,7 +98,7 @@ def Copy(src, dest):
 # TODO(zundel): this excludes the analyzer from the sdk build until builders
 # have all prerequisite software installed.  Also update dart.gyp.
 def ShouldCopyAnalyzer():
-  os = utils.GuessOS(); 
+  os = utils.GuessOS();
   return os == 'linux' or os == 'macos'
 
 
@@ -130,6 +130,9 @@ def CopyDart2Js(build_dir, sdk_root):
   copytree(os.path.join('corelib', 'src'),
            os.path.join(sdk_root, 'lib', 'dart2js', 'corelib', 'src'),
            ignore=ignore_patterns('.svn'))
+  copytree(os.path.join('corelib', 'unified'),
+           os.path.join(sdk_root, 'lib', 'dart2js', 'corelib', 'unified'),
+           ignore=ignore_patterns('.svn'))
   copytree(os.path.join('runtime', 'lib'),
            os.path.join(sdk_root, 'lib', 'dart2js', 'runtime', 'lib'),
            ignore=ignore_patterns('.svn'))