Cludge to prevent .so from being a data_dep in resource_whitelist

BUG=748113

Change-Id: I9aa6fa7cc0f8b7e4c84d0eea11686033ebf45e6e
Reviewed-on: https://chromium-review.googlesource.com/584170
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#489338}

tools/resources/OWNERS

@@ -1,4 +1,3 @@
-per-file generate_resource_whitelist.*=agrieve@chromium.org
+agrieve@chromium.org
 per-file generate_resource_whitelist.*=estevenson@chromium.org
-per-file filter_resource_whitelist.*=agrieve@chromium.org
 per-file filter_resource_whitelist.*=zpeng@chromium.org

tools/resources/dummy.c

@@ -0,0 +1,7 @@
+// Copyright 2017 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.
+
+int main(int argc, char**argv) {
+  return 0;
+}

tools/resources/generate_resource_whitelist.gni

@@ -21,17 +21,24 @@
 #     output = "$target_gen_dir/pak_whitelist.txt"
 #   }
 template("generate_resource_whitelist") {
-  action(target_name) {
+  # Wrap the shared_library in an executable so that it does not get added
+  # as a data_dep.
+  # TODO(crbug/748113): Remove once GN has a way to specify compile-only deps.
+  executable("${target_name}__exec") {
     forward_variables_from(invoker, [ "deps" ])
+    sources = [
+      "//tools/resources/dummy.c",
+    ]
+  }
+  action(target_name) {
+    deps = [
+      ":${target_name}__exec",
+    ]
     assert(is_android,
            "Resource whitelist currently implemented only on Android")
 
     script = "//tools/resources/generate_resource_whitelist.py"
 
-    inputs = [
-      invoker.input,
-    ]
-
     outputs = [
       invoker.output,
     ]