Move more vector icons into respective directories.

ui/gfx/vector_icons/shelf_logout.1x.icon

Index: ui/gfx/vector_icons/shelf_logout.1x.icon
diff --git a/ui/gfx/vector_icons/shelf_logout.1x.icon b/ui/gfx/vector_icons/shelf_logout.1x.icon
deleted file mode 100644
index a2e068f35674b8aa729fc233d3bd2a1e2312aac3..0000000000000000000000000000000000000000
--- a/ui/gfx/vector_icons/shelf_logout.1x.icon
+++ /dev/null
@@ -1,35 +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, 16,
-MOVE_TO, 8, 12,
-R_LINE_TO, 4, -4,
-R_LINE_TO, -4, -4,
-R_LINE_TO, -1.5f, 1.5f,
-LINE_TO, 8, 7,
-H_LINE_TO, 1,
-R_V_LINE_TO, 2,
-R_H_LINE_TO, 7,
-R_LINE_TO, -1.5f, 1.5f,
-LINE_TO, 8, 12,
-CLOSE,
-MOVE_TO, 3.57f, 1.03f,
-CUBIC_TO, 2, 1.03f, 1.03f, 2, 1.03f, 3.57f,
-V_LINE_TO, 6,
-H_LINE_TO, 3,
-V_LINE_TO, 3,
-R_H_LINE_TO, 10,
-R_V_LINE_TO, 10,
-H_LINE_TO, 3,
-R_V_LINE_TO, -2,
-H_LINE_TO, 1.03f,
-R_V_LINE_TO, 1.47f,
-CUBIC_TO, 1.03f, 14, 2, 15, 3.57f, 15,
-R_H_LINE_TO, 8.9f,
-R_CUBIC_TO, 1.54f, 0, 2.53f, -1, 2.53f, -2.53f,
-R_V_LINE_TO, -8.9f,
-CUBIC_TO, 15, 2, 13.96f, 1.03f, 12.46f, 1.03f,
-R_H_LINE_TO, -8.9f,
-CLOSE,
-END