Fork some more files from the old framework, so that the transition will be easier to perform.

sky/sdk/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//mojo/public/dart/rules.gni")
 
 dart_pkg("sdk") {
   sources = [
     "CHANGELOG.md",
     "README.md",
     "bin/init.dart",
+    "lib/animation/animated_value.dart",
+    "lib/animation/curves.dart",
+    "lib/animation/fling_curve.dart",
+    "lib/animation/generators.dart",
+    "lib/animation/mechanics.dart",
+    "lib/animation/scroll_behavior.dart",
     "lib/app/scheduler.dart",
     "lib/assets/.gitignore",
     "lib/assets/material-design-icons.sha1",
+    "lib/debug/utils.dart",
     "lib/download_material_design_icons",
     "lib/editing2/editable_string.dart",
     "lib/editing2/editable_text.dart",
     "lib/editing2/input.dart",
     "lib/editing2/keyboard.dart",
     "lib/framework/README.md",
     "lib/framework/animation/animated_value.dart",
     "lib/framework/animation/curves.dart",
     "lib/framework/animation/fling_curve.dart",
     "lib/framework/animation/generators.dart",
@@ skipping 17 matching lines @@
     "lib/framework/components/menu_item.dart",
     "lib/framework/components/modal_overlay.dart",
     "lib/framework/components/popup_menu.dart",
     "lib/framework/components/popup_menu_item.dart",
     "lib/framework/components/radio.dart",
     "lib/framework/components/scaffold.dart",
     "lib/framework/components/scrollable.dart",
     "lib/framework/components/tool_bar.dart",
     "lib/framework/debug/shake-to-reload.sky",
     "lib/framework/debug/tracing.dart",
-    "lib/framework/debug/utils.dart",
     "lib/framework/editing/editable_string.dart",
     "lib/framework/editing/editable_text.dart",
     "lib/framework/editing/keyboard.dart",
     "lib/framework/embedder.dart",
     "lib/framework/fn.dart",
     "lib/framework/layout.dart",
     "lib/framework/net/fetch.dart",
     "lib/framework/net/image_cache.dart",
     "lib/framework/node.dart",
     "lib/framework/reflect.dart",
     "lib/framework/shell.dart",
     "lib/framework/theme/colors.dart",
     "lib/framework/theme/shadows.dart",
     "lib/framework/theme/typography.dart",
     "lib/framework/theme/view_configuration.dart",
     "lib/internals.dart",
+    "lib/mojo/embedder.dart",
+    "lib/mojo/net/fetch.dart",
+    "lib/mojo/net/image_cache.dart",
+    "lib/mojo/shell.dart",
     "lib/painting/box_painter.dart",
     "lib/painting/shadows.dart",
     "lib/painting/text_style.dart",
     "lib/rendering/block.dart",
     "lib/rendering/box.dart",
     "lib/rendering/flex.dart",
     "lib/rendering/object.dart",
     "lib/rendering/paragraph.dart",
     "lib/rendering/sky_binding.dart",
     "lib/rendering/stack.dart",
@@ skipping 40 matching lines @@
     "//sky/services/viewport",
   ]
 
   datadeps = [
     "//sky/services/testing:bindings",
     "//sky/engine/bindings",
   ]
 
   sdk_ext_directory = "$root_gen_dir/sky/bindings"
 }