Add GN build for some chrome common, chrome net, and resources targets.

chrome/renderer/BUILD.gn

Index: chrome/renderer/BUILD.gn
diff --git a/ui/webui/resources/BUILD.gn b/chrome/renderer/BUILD.gn
similarity index 58%
copy from ui/webui/resources/BUILD.gn
copy to chrome/renderer/BUILD.gn
index 7b0001bb374c020fd3db267ce4ff5624a4ea43cd..5181afbe1d8f019344aab64a0951aaf83891cdec 100644
--- a/ui/webui/resources/BUILD.gn
+++ b/chrome/renderer/BUILD.gn
@@ -1,10 +1,11 @@
-# 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.
-
-import("//tools/grit/grit_rule.gni")
-
-grit("resources") {
-  output_name = "webui_resources"
-  source = "webui_resources.grd"
-}
+# 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.
+
+import("//tools/grit/grit_rule.gni")
+
+# GYP version: chrome/chrome_resources.gyp:chrome_resources
+# (generate_renderer_resources action)
+grit("resources") {
+  source = "resources/renderer_resources.grd"
+}