Added correct "stop" icon for Media Router.

Bug: 877702
Change-Id: Ifdd3355c2d9d0fb46fed19c21cbe2a066abf6ad4
Reviewed-on: https://chromium-review.googlesource.com/c/1239010
Commit-Queue: John Williams <jrw@chromium.org>
Reviewed-by: Evan Stade <estade@chromium.org>
Reviewed-by: Takumi Fujimoto <takumif@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596417}

chrome/app/vector_icons/BUILD.gn

@@ -87,6 +87,7 @@ aggregate_vector_icons("chrome_vector_icons") {
     "smartphone.icon",
     "speaker.icon",
     "speaker_group.icon",
+    "stop.icon",
     "supervisor_account.icon",
     "supervisor_account_circle.icon",
     "sync.icon",

chrome/app/vector_icons/stop.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,
+ROUND_RECT, 7, 7, 6, 6, 0,
+NEW_PATH,
+STROKE, 2,
+CIRCLE, 10, 10, 7,
+CLOSE

chrome/browser/ui/views/media_router/cast_dialog_sink_button.cc

@@ -38,9 +38,8 @@ class StopButton : public views::LabelButton {
              int button_tag,
              bool enabled)
       : views::LabelButton(button_listener, base::string16()) {
-    // TODO(https://crbug.com/877702): Update the icon to match the mocks.
-    static const gfx::ImageSkia icon = CreateVectorIcon(
-        kNavigateStopIcon, kPrimaryIconSize, gfx::kGoogleBlue500);
+    static const gfx::ImageSkia icon =
+        CreateVectorIcon(kStopIcon, kPrimaryIconSize, gfx::kGoogleBlue500);
     SetImage(views::Button::STATE_NORMAL, icon);
     SetInkDropMode(views::InkDropHostView::InkDropMode::ON);
     set_tag(button_tag);