GN: Start of //third_party/WebKit/Source/web

Source/build/make_file_arrays.gni

+# Copyright 2014 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.
+
+template("make_file_arrays") {
+  assert(defined(invoker.resources), "Need resources in %target_name")
+  assert(defined(invoker.filename), "Need filename in %target_name")
+
+  code_gen_target_name = target_name + "_code_gen"
+
+  action(code_gen_target_name) {
+    source_prereqs = invoker.resources
+    script = "//third_party/WebKit/Source/build/scripts/make-file-arrays.py"
+    sources = [ script ]
+    sources += invoker.resources
+    outputs = [
+      "$root_gen_dir/blink/" + invoker.filename + ".h",
+      "$root_gen_dir/blink/" + invoker.filename + ".cpp",
+    ]
+    args = [
+      "--out-h=gen/blink/" + invoker.filename + ".h",
+      "--out-cpp=gen/blink/" + invoker.filename + ".cpp",
+    ]
+    args += rebase_path(invoker.resources, root_build_dir, ".")
+  }
+
+  source_set(target_name) {
+    sources = get_target_outputs(":$code_gen_target_name")
+    deps = [ ":$code_gen_target_name" ]
+  }
+}
+
+