[infra] Translate _sources.gypi files to _sources.gni files

runtime/lib/core_sources.gni

Index: runtime/lib/core_sources.gni
diff --git a/runtime/lib/core_sources.gni b/runtime/lib/core_sources.gni
new file mode 100644
index 0000000000000000000000000000000000000000..221dc03f171e6fc333ad880e40b6ab7b71addd95
--- /dev/null
+++ b/runtime/lib/core_sources.gni
@@ -0,0 +1,57 @@
+# Copyright (c) 2017, 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.
+
+# Sources visible via default library.
+core_runtime_sources = [
+  "core_patch.dart",
+
+  # The above file needs to be first as it imports required libraries.
+  "array.cc",
+  "array.dart",
+  "array_patch.dart",
+  "bigint.dart",
+  "bool.cc",
+  "bool_patch.dart",
+  "date.cc",
+  "date_patch.dart",
+  "double.cc",
+  "double.dart",
+  "double_patch.dart",
+  "errors.cc",
+  "errors_patch.dart",
+  "expando_patch.dart",
+  "function.cc",
+  "function.dart",
+  "function_patch.dart",
+  "growable_array.cc",
+  "growable_array.dart",
+  "identical.cc",
+  "identical_patch.dart",
+  "immutable_map.dart",
+  "integers.cc",
+  "integers.dart",
+  "integers_patch.dart",
+  "invocation_mirror.h",
+  "invocation_mirror_patch.dart",
+  "lib_prefix.dart",
+  "map_patch.dart",
+  "null_patch.dart",
+  "object.cc",
+  "object_patch.dart",
+  "regexp.cc",
+  "regexp_patch.dart",
+  "stacktrace.cc",
+  "stacktrace.dart",
+  "stacktrace.h",
+  "stopwatch.cc",
+  "stopwatch_patch.dart",
+  "string.cc",
+  "string_buffer_patch.dart",
+  "string_patch.dart",
+  "type_patch.dart",
+  "uri.cc",
+  "uri_patch.dart",
+  "weak_property.cc",
+  "weak_property.dart",
+]