Land incremental building of the editor

deps/all.deps/DEPS

 # 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.
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
 
   "gyp_rev": "@1495",
@@ skipping 100 matching lines @@
 
 # TODO(iposva): Move the necessary tools so that hooks can be run
 # without the runtime being available.
 hooks = [
   {
     "pattern": ".",
     "action": ["python", "dart/compiler/scripts/generate_my_projects.py"],
   },
   {
     "pattern": ".",
+    "action": ["python", "dart/editor/build/generate_sources.py"],
+  },
+  {
+    "pattern": ".",
     "action": ["python", "dart/tools/gyp_dart.py"],
   },
 ]