Allow sky apps to be consumers of mojo services

sky/engine/bindings2/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("//sky/engine/bindings2/bindings.gni")
 import("//sky/engine/core/core.gni")
 
 source_set("bindings2") {
   sources = [
     "builtin.cc",
     "builtin.h",
     "builtin_natives.cc",
     "builtin_natives.h",
     "builtin_sky.cc",
     "builtin_sky.h",
     "dart_callback.cc",
     "dart_callback.h",
     "dart_event_listener.cc",
     "dart_event_listener.h",
     "exception_messages.cc",
     "exception_messages.h",
     "exception_state.cc",
     "exception_state.h",
     "exception_state_placeholder.cc",
     "exception_state_placeholder.h",
+    "mojo_natives.cc",
+    "mojo_natives.h",

[abarth-chromium, 2015/02/12 03:29:33]

We should put this code somewhere that we can share it between Sky and the
dart_content_handler.

     "nullable.h",
     "scheduled_action.cc",
     "scheduled_action.h",
   ]
   deps = [
     "//base",
     "//dart/runtime/bin:libdart_withcore",
+    "//mojo/public/c/system",
+    "//mojo/public/cpp/system",
     "//sky/engine/platform:platform",
     "//sky/engine/tonic",
     "//sky/engine/wtf",
     ":generated_bindings",
     ":snapshot_cc",
   ]
   include_dirs = [
     "..",
     "$root_build_dir",
   ]
 }
 
 action("generate_snapshot_bin") {
   deps = [
     "//dart/runtime/bin:gen_snapshot($host_toolchain)",
     ":generate_sky_core_dart",
   ]
   inputs = [
     "//dart/runtime/tools/create_snapshot_bin.py",
     "//sky/engine/bindings2/builtin.dart",
+    "//mojo/public/dart/application.dart",
+    "//mojo/public/dart/bindings.dart",
+    "//mojo/public/dart/core.dart",
+    "//mojo/public/dart/src/application.dart",
+    "//mojo/public/dart/src/buffer.dart",
+    "//mojo/public/dart/src/codec.dart",
+    "//mojo/public/dart/src/data_pipe.dart",
+    "//mojo/public/dart/src/drain_data.dart",
+    "//mojo/public/dart/src/event_stream.dart",
+    "//mojo/public/dart/src/handle.dart",
+    "//mojo/public/dart/src/handle_watcher.dart",
+    "//mojo/public/dart/src/message.dart",
+    "//mojo/public/dart/src/message_pipe.dart",
+    "//mojo/public/dart/src/proxy.dart",
+    "//mojo/public/dart/src/service_provider.dart",
+    "//mojo/public/dart/src/struct.dart",
+    "//mojo/public/dart/src/stub.dart",
+    "//mojo/public/dart/src/timer_queue.dart",
+    "//mojo/public/dart/src/types.dart",

[abarth-chromium, 2015/02/12 03:29:33]

Is there some target we can depend on so we don't need to duplicate this list
here?  Maybe factoring out mojo_natives will make that happen naturally.

     "snapshot.dart",
   ]
   output = "$target_gen_dir/snapshot_gen.bin"
   outputs = [
     output,
   ]
 
   builtin_path = rebase_path("//sky/engine/bindings2/builtin.dart")
   sky_core_path = rebase_path("$bindings_output_dir/sky_core.dart")
+  mojo_application_path = rebase_path("//mojo/public/dart/application.dart")
+  mojo_bindings_path = rebase_path("//mojo/public/dart/bindings.dart")
+  mojo_core_path = rebase_path("//mojo/public/dart/core.dart")
 
   gen_snapshot_dir =
       get_label_info("//dart/runtime/bin:gen_snapshot($host_toolchain)",
                      "root_out_dir")
   script = "//dart/runtime/tools/create_snapshot_bin.py"
 
   args = [
     "--executable",
     rebase_path("$gen_snapshot_dir/gen_snapshot"),
     "--package_root",
     rebase_path("$root_gen_dir"),
     "--script",
     rebase_path("snapshot.dart"),
     "--output_bin",
     rebase_path(output, root_build_dir),
     "--target_os",
     os,
     "--url_mapping=dart:sky,$sky_core_path",
+    "--url_mapping=dart:mojo_application,$mojo_application_path",
+    "--url_mapping=dart:mojo_bindings,$mojo_bindings_path",
+    "--url_mapping=dart:mojo_core,$mojo_core_path",
     "--url_mapping=dart:sky_builtin,$builtin_path",
   ]
 }
 
 action("generate_snapshot_file") {
   deps = [
     ":generate_snapshot_bin",
   ]
   inputs = [
     "//dart/runtime/tools/create_snapshot_file.py",
@@ skipping 274 matching lines @@
   ]
 
   include_dirs = [
     "..",
     "$root_build_dir",
   ]
 
   sources = get_target_outputs(":compile_idls")
   sources += get_target_outputs(":generate_dart_globals")
 }