More work on content/browser GN build.

chromeos/BUILD.gn

Index: chromeos/BUILD.gn
diff --git a/chromeos/BUILD.gn b/chromeos/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..22af317ac2bd2d5973ff95e7bd73753bc9a303f8
--- /dev/null
+++ b/chromeos/BUILD.gn
@@ -0,0 +1,17 @@
+# 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("//third_party/protobuf/proto_library.gni")
+
+proto_library("power_manager_proto") {
+  sources = [
+    "//third_party/cros_system_api/dbus/power_manager/input_event.proto",
+    "//third_party/cros_system_api/dbus/power_manager/peripheral_battery_status.proto",
+    "//third_party/cros_system_api/dbus/power_manager/policy.proto",
+    "//third_party/cros_system_api/dbus/power_manager/power_supply_properties.proto",
+    "//third_party/cros_system_api/dbus/power_manager/suspend.proto",
+  ]
+  proto_in_dir = "//third_party/cros_system_api/dbus/power_manager"
+  proto_out_dir = "chromeos/dbus/power_manager"
+}