Make ui/gfx/range a component

ui/gfx/range/BUILD.gn

Index: ui/gfx/range/BUILD.gn
diff --git a/ui/gfx/range/BUILD.gn b/ui/gfx/range/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..29085d1a6802cc7bcf23d9e04a474ba440752830
--- /dev/null
+++ b/ui/gfx/range/BUILD.gn
@@ -0,0 +1,26 @@
+# Copyright 2016 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.
+
+component("range") {
+  sources = [
+    "range.cc",
+    "range.h",
+    "range_f.cc",
+    "range_f.h",
+    "range_mac.mm",
+    "range_win.cc",
+  ]
+
+  configs += [
+    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+    "//build/config/compiler:no_size_t_to_int_warning",
+  ]
+
+  defines = [ "GFX_IMPLEMENTATION" ]
+
+  deps = [
+    "//base",
+    "//ui/gfx:gfx_export",
+  ]
+}