Add an HTTP library that wraps dart:io.

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index bc88ac6ccffc975651197d7630873dfbc5ac32f5..e264d80b2655b67d36dfd10b667c6ec3069620f8 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -12,8 +12,13 @@ fixnum/test/int_64_vm_test: Skip
 [$compiler == dart2dart]
 *: Skip
 
+# Don't compiile tests that use dart:io to JS
+[ $compiler == dart2js || $compiler == dart2dart || $compiler == dartc ]
+http/test/*: Skip
+
 # Skip tests that use local file access if we're running in any browser
 [ $runtime == opera || $runtime == ff || $runtime == ie9 || $runtime == dartium || $runtime == chrome || $runtime == safari || $runtime == drt ]
+http/test/*: Skip
 intl/test/date_time_format_file_even_test: Skip
 intl/test/date_time_format_file_odd_test: Skip
 intl/test/find_default_locale_standalone_test: Skip