Add support for loading scripts from http

runtime/bin/bin.gypi

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
   'variables': {
     # We place most generated source files in LIB_DIR (rather than, say
     # SHARED_INTERMEDIATE_DIR) because it is toolset specific. This avoids
     # two problems. First, if a generated source file has architecture specific
     # code, we'll get two different files in two different directories. Second,
@@ skipping 227 matching lines @@
       ],
     },
     {
       # Completely statically linked binary for generating snapshots.
       'target_name': 'gen_snapshot',
       'type': 'executable',
       'toolsets':['host'],
       'dependencies': [
         'libdart_withcore',
         'libdart_builtin',
+        'libdart_io',

[Ivan Posva, 2013/05/24 17:53:43]

Why was this needed?

[Cutch, 2013/05/24 17:59:56]

Socket calls in libdart_builtin

       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'gen_snapshot.cc',
         # Very limited native resolver provided.
         'builtin_gen_snapshot.cc',
         'builtin.cc',
         'builtin.h',
@@ skipping 303 matching lines @@
         ['OS=="linux"', {
           'cflags': [
             '-fPIC',
           ],
         }],
       ],
     },
   ],
 }