Add ui/file_manager/BUILD.gn

BUG=None
R=cmasone@chromium.org, fukino@chromium.org
TEST=manually

Review URL: https://codereview.chromium.org/607413005

Cr-Commit-Position: refs/heads/master@{#297347}

ui/file_manager/BUILD.gn

+# 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") {
+  source = "file_manager_resources.grd"
+  outputs = [
+    "grit/file_manager_resources.h",
+    "grit/file_manager_resources_map.cc",
+    "grit/file_manager_resources_map.h",
+    "file_manager_resources.pak",
+    "file_manager_resources.rc",
+  ]
+}
+
+component("file_manager") {
+  sources = [
+    "file_manager_export.h",
+    "file_manager_resource_util.cc",
+    "file_manager_resource_util.h",
+  ]
+  deps = [
+    "//base",
+    ":resources"
+  ]
+  defines = [ "FILE_MANAGER_IMPLEMENTATION" ]
+}