[Chrome OS MD] Implement accessibility detailed view for the MD Ash system menu

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

Index: ui/gfx/vector_icons/check_circle.1x.icon
diff --git a/ui/gfx/vector_icons/check_circle.1x.icon b/ui/gfx/vector_icons/check_circle.1x.icon
new file mode 100644
index 0000000000000000000000000000000000000000..6a4aa2e4a0ea9d5f390968f25f0dc3f5871a5414
--- /dev/null
+++ b/ui/gfx/vector_icons/check_circle.1x.icon
@@ -0,0 +1,20 @@
+// Copyright 2015 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, 20,
+MOVE_TO, 10, 2,
+R_CUBIC_TO, -4.42f, 0, -8, 3.58f, -8, 8,
+R_CUBIC_TO, 0, 4.42f, 3.58f, 8, 8, 8,
+R_CUBIC_TO, 4.42f, 0, 8, -3.58f, 8, -8,
+R_CUBIC_TO, 0, -4.42f, -3.58f, -8, -8, -8,
+CLOSE,
+MOVE_TO, 8.4f, 14,
+R_LINE_TO, -4, -4,
+R_LINE_TO, 1.13f, -1.13f,
+LINE_TO, 8.4f, 11.74f,
+R_LINE_TO, 6.07f, -6.07f,
+LINE_TO, 15.6f, 6.8f,
+LINE_TO, 8.4f, 14,
+CLOSE,
+END