cros: add google/mic icons to searchbox

ui/app_list/vector_icons/ic_mic_black.icon

Index: ui/app_list/vector_icons/ic_mic_black.icon
diff --git a/ui/app_list/vector_icons/ic_mic_black.icon b/ui/app_list/vector_icons/ic_mic_black.icon
new file mode 100644
index 0000000000000000000000000000000000000000..ca365a09d4927946d13e6a3c6083880f7e22acb4
--- /dev/null
+++ b/ui/app_list/vector_icons/ic_mic_black.icon
@@ -0,0 +1,24 @@
+// Copyright 2017 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.
+
+MOVE_TO, 24, 29,
+CUBIC_TO, 27.32f, 29, 29.98f, 26.32f, 29.98f, 23,
+LINE_TO, 30, 11,
+CUBIC_TO, 30, 7.68f, 27.32f, 5, 24, 5,
+CUBIC_TO, 20.68f, 5, 18, 7.68f, 18, 11,
+LINE_TO, 18, 23,
+CUBIC_TO, 18, 26.32f, 20.68f, 29, 24, 29,
+CLOSE,
+MOVE_TO, 34.6f, 23,
+CUBIC_TO, 34.6f, 29, 29.52f, 33.2f, 24, 33.2f,
+CUBIC_TO, 18.48f, 33.2f, 13.4f, 29, 13.4f, 23,
+LINE_TO, 10, 23,
+CUBIC_TO, 10, 29.82f, 15.44f, 35.46f, 22, 36.44f,
+LINE_TO, 22, 43,
+LINE_TO, 26, 43,
+LINE_TO, 26, 36.44f,
+CUBIC_TO, 32.56f, 35.48f, 38, 29.84f, 38, 23,
+LINE_TO, 34.6f, 23,
+CLOSE,
+END