[Fuchsia] Build only the parts of the SDK that are needed

BUILD.gn

 # Copyright (c) 2016, 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.
 
 # This target will be built if no target is specified when invoking ninja.
 group("default") {
   if (defined(is_fuchsia) && (is_fuchsia || is_fuchsia_host)) {
     # Fuchsia has run_vm_tests marked testonly.
     testonly = true
   }
@@ skipping 49 matching lines @@
 
 group("runtime_precompiled") {
   deps = [
     "runtime/bin:dart_bootstrap($host_toolchain)",
     "runtime/bin:dart_precompiled_runtime",
     "runtime/bin:process_test",
     "runtime/vm:patched_sdk",
   ]
 }
 
-action("create_sdk") {
+group("create_sdk") {
   deps = [
-    "runtime/bin:dart",
-    "utils/analysis_server",
-    "utils/compiler:dart2js",
-    "utils/compiler:utils_wrapper",
-    "utils/dartanalyzer:generate_dartanalyzer_snapshot",
-    "utils/dartanalyzer:generate_summary_spec",
-    "utils/dartanalyzer:generate_summary_strong",
-    "utils/dartdevc",
-    "utils/dartdoc",
-    "utils/dartfmt",
-    "utils/pub",
+    "sdk:create_sdk",
   ]
-
-  sdk_lib_files = exec_script("tools/list_dart_files.py",
-                              [
-                                "absolute",
-                                rebase_path("sdk/lib"),
-                              ],
-                              "list lines")
-
-  preamble_files =
-      exec_script("tools/list_files.py",
-                  [
-                    "absolute",
-                    "",
-                    rebase_path("sdk/lib/_internal/js_runtime/lib/preambles"),
-                  ],
-                  "list lines")
-
-  sdk_bin_files = exec_script("tools/list_files.py",
-                              [
-                                "absolute",
-                                "",
-                                rebase_path("sdk/bin"),
-                              ],
-                              "list lines")
-
-  inputs = sdk_lib_files + preamble_files + sdk_bin_files + [
-             "sdk/lib/dart_client.platform",
-             "sdk/lib/dart_server.platform",
-             "sdk/lib/dart_shared.platform",
-             "$root_gen_dir/dart2js.dart.snapshot",
-             "$root_gen_dir/utils_wrapper.dart.snapshot",
-             "$root_gen_dir/pub.dart.snapshot",
-             "$root_gen_dir/dartanalyzer.dart.snapshot",
-             "$root_gen_dir/dartdevc.dart.snapshot",
-             "$root_gen_dir/dartfmt.dart.snapshot",
-             "$root_gen_dir/analysis_server.dart.snapshot",
-             "$root_gen_dir/dartdoc.dart.snapshot",
-             "$root_gen_dir/spec.sum",
-             "$root_gen_dir/strong.sum",
-             "tools/VERSION",
-           ]
-
-  outputs = [
-    "$root_out_dir/dart-sdk/README",
-  ]
-
-  script = "tools/create_sdk.py"
-  args = [
-    "--sdk_output_dir",
-    rebase_path("$root_out_dir/dart-sdk"),
-    "--snapshot_location",
-    rebase_path("$root_gen_dir"),
-  ]
-  if (defined(is_fuchsia) && is_fuchsia_host) {
-    args += [ "--copy_libs" ]
-  }
-  if (defined(is_fuchsia) && (is_fuchsia || is_fuchsia_host)) {
-    # The binaries are already stripped.
-    args += [ "--disable_stripping" ]
-  }
 }
 
 group("dart2js") {
   deps = [
     "utils/compiler:dart2js",
   ]
 }
 
 group("dartanalyzer") {
   deps = [
@@ skipping 112 matching lines @@
         "--output-file",
         rebase_path(output),
         "--build-id-map",
         rebase_path("$target_gen_dir/build_id_map"),
         "--pre-binaries",
         rebase_path(magenta_bootdata),
       ]
     }
   }
 }