Bringing back fast user switching on desktop user menu

ui/gfx/vector_icons/account_circle.icon

Index: ui/gfx/vector_icons/account_circle.icon
diff --git a/ui/gfx/vector_icons/account_circle.icon b/ui/gfx/vector_icons/account_circle.icon
new file mode 100644
index 0000000000000000000000000000000000000000..2774de461970d44b5f3cfd369772c1f9f49e0736
--- /dev/null
+++ b/ui/gfx/vector_icons/account_circle.icon
@@ -0,0 +1,24 @@
+// 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, 24,
+MOVE_TO, 12, 2,
+CUBIC_TO, 6.48f, 2, 2, 6.48f, 2, 12,
+R_CUBIC_TO, 0, 5.52f, 4.48f, 10, 10, 10,
+R_CUBIC_TO, 5.52f, 0, 10, -4.48f, 10, -10,
+CUBIC_TO, 22, 6.48f, 17.52f, 2, 12, 2,
+CLOSE,
+R_MOVE_TO, 0, 3,
+R_CUBIC_TO, 1.66f, 0, 3, 1.34f, 3, 3,
+R_CUBIC_TO, 0, 1.66f, -1.34f, 3, -3, 3,
+R_CUBIC_TO, -1.66f, 0, -3, -1.34f, -3, -3,
+R_CUBIC_TO, 0, -1.66f, 1.34f, -3, 3, -3,
+CLOSE,
+R_MOVE_TO, 0, 14.2f,
+R_CUBIC_TO, -2.5f, 0, -4.71f, -1.28f, -6, -3.22f,
+R_CUBIC_TO, 0.03f, -1.99f, 4, -3.08f, 6, -3.08f,
+R_CUBIC_TO, 1.99f, 0, 5.97f, 1.09f, 6, 3.08f,
+R_CUBIC_TO, -1.29f, 1.94f, -3.5f, 3.22f, -6, 3.22f,
+CLOSE,
+END