Update Dictation icon in accessibility tray menu

BUG=None
TEST=None

Change-Id: Ie9702139a651b118c91264cb930816720a2bf178
Reviewed-on: https://chromium-review.googlesource.com/1112644
Commit-Queue: Zach Helfinstein <zhelfins@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570129}

ash/resources/vector_icons/BUILD.gn

@@ -12,6 +12,7 @@ aggregate_vector_icons("ash_vector_icons") {
     "assistant.icon",
     "captive_portal.icon",
     "check_circle.icon",
+    "dictation_menu.icon",
     "dictation_off.icon",
     "dictation_on.icon",
     "ime_menu_emoticon.icon",

ash/resources/vector_icons/dictation_menu.icon

+// Copyright 2018 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, 12.56f, 9.5f,
+CUBIC_TO, 12.56f, 10.88f, 11.42f, 12, 10, 12,
+CUBIC_TO, 8.58f, 12, 7.43f, 10.88f, 7.43f, 9.5f,
+LINE_TO, 7.43f, 4.5f,
+CUBIC_TO, 7.43f, 3.12f, 8.58f, 2, 10, 2,
+CUBIC_TO, 11.42f, 2, 12.57f, 3.12f, 12.57f, 4.5f,
+LINE_TO, 12.56f, 9.5f,
+CLOSE,
+MOVE_TO, 10.05f, 3.5f,
+CUBIC_TO, 9.5f, 3.5f, 9.05f, 3.95f, 9.05f, 4.5f,
+LINE_TO, 9.01f, 9.5f,
+CUBIC_TO, 9.01f, 9.5f, 9.01f, 9.51f, 9.01f, 9.51f,
+CUBIC_TO, 9.01f, 10.06f, 9.45f, 10.5f, 10, 10.5f,
+CUBIC_TO, 10.55f, 10.5f, 11, 10.05f, 11.01f, 9.5f,
+LINE_TO, 11.05f, 4.5f,
+CUBIC_TO, 11.05f, 4.5f, 11.05f, 4.49f, 11.05f, 4.49f,
+CUBIC_TO, 11.05f, 3.94f, 10.6f, 3.5f, 10.05f, 3.5f,
+CLOSE,
+MOVE_TO, 10, 13.87f,
+CUBIC_TO, 7.63f, 13.87f, 5.46f, 12.11f, 5.46f, 9.58f,
+LINE_TO, 4, 9.58f,
+CUBIC_TO, 4, 12.46f, 6.33f, 14.83f, 9.14f, 15.24f,
+LINE_TO, 9.14f, 18,
+LINE_TO, 10.86f, 18,
+LINE_TO, 10.86f, 15.24f,
+CUBIC_TO, 13.67f, 14.83f, 16, 12.46f, 16, 9.58f,
+LINE_TO, 14.54f, 9.58f,
+CUBIC_TO, 14.54f, 12.11f, 12.37f, 13.87f, 10, 13.87f,
+CLOSE

ash/system/tray_accessibility.cc

@@ -232,7 +232,7 @@ void AccessibilityDetailedView::AppendAccessibilityList() {
 
   dictation_enabled_ = controller->IsDictationEnabled();
   dictation_view_ = AddScrollListCheckableItem(
-      kDictationOffIcon,
+      kDictationMenuIcon,
       l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_ACCESSIBILITY_DICTATION),
       dictation_enabled_);