Create vector icon directory for resources used by controls in ui/views.

ui/gfx/vector_icons/checkbox_normal.icon

Index: ui/gfx/vector_icons/checkbox_normal.icon
diff --git a/ui/gfx/vector_icons/checkbox_normal.icon b/ui/gfx/vector_icons/checkbox_normal.icon
deleted file mode 100644
index aa9aae8a64a34e3ec58804ddd609f134e9554791..0000000000000000000000000000000000000000
--- a/ui/gfx/vector_icons/checkbox_normal.icon
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-CANVAS_DIMENSIONS, 32,
-MOVE_TO, 2, 3.99f,
-CUBIC_TO, 2, 2.89f, 2.9f, 2, 3.99f, 2,
-R_H_LINE_TO, 24.02f,
-CUBIC_TO, 29.11f, 2, 30, 2.9f, 30, 3.99f,
-R_V_LINE_TO, 24.02f,
-R_CUBIC_TO, 0, 1.1f, -0.9f, 1.99f, -1.99f, 1.99f,
-H_LINE_TO, 3.99f,
-CUBIC_TO, 2.89f, 30, 2, 29.1f, 2, 28.01f,
-V_LINE_TO, 3.99f,
-CLOSE,
-MOVE_TO, 5, 5,
-R_H_LINE_TO, 22,
-R_V_LINE_TO, 22,
-H_LINE_TO, 5,
-V_LINE_TO, 5,
-CLOSE,
-END