cros: Add tooltip and icon to the system tray locale button

The screenshot can be found at https://drive.google.com/file/d/1zMTMCNiJQXcLzeL_sfZaWNMS-OJ5n7SM/view?usp=sharing

Also include the hash in the CL.

Bug: 877749
Change-Id: Ibf118e2c20f158cf2fd2c2cef955c9d04c205b86
Reviewed-on: https://chromium-review.googlesource.com/c/1333830Reviewed-by: Evan Stade <estade@chromium.org>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Commit-Queue: Wenzhao (Colin) Zang <wzang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608608}

ash/ash_strings.grd

@@ -549,6 +549,9 @@ This file contains the strings for ash.
       <message name="IDS_ASH_STATUS_TRAY_LOCALE_TITLE" desc="The title shown in the locale detailed view.">
         Languages
       </message>
+      <message name="IDS_ASH_STATUS_TRAY_LOCALE_TOOLTIP" desc="The tooltip text in the tray to show the locale menu.">
+        Show language settings
+      </message>
 
       <!-- Status tray supervised users. -->
       <message name="IDS_ASH_STATUS_TRAY_SUPERVISED_LABEL" desc="Label shown instead of email for supervised users">

ash/ash_strings_grd/IDS_ASH_STATUS_TRAY_LOCALE_TOOLTIP.png.sha1

+488707bc8fbcee8f16adab3eea0910f58cf4e505
\ No newline at end of file

ash/resources/vector_icons/BUILD.gn

@@ -214,6 +214,7 @@ aggregate_vector_icons("ash_vector_icons") {
     "unified_menu_info.icon",
     "unified_menu_keyboard_brightness.icon",
     "unified_menu_keyboard.icon",
+    "unified_menu_locale.icon",
     "unified_menu_lock.icon",
     "unified_menu_managed.icon",
     "unified_menu_more.icon",

ash/resources/vector_icons/unified_menu_locale.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, 24,
+MOVE_TO, 11.99f, 2,
+CUBIC_TO, 6.47f, 2, 2, 6.48f, 2, 12,
+R_CUBIC_TO, 0, 5.52f, 4.47f, 10, 9.99f, 10,
+CUBIC_TO, 17.52f, 22, 22, 17.52f, 22, 12,
+CUBIC_TO_SHORTHAND, 17.52f, 2, 11.99f, 2,
+CLOSE,
+R_MOVE_TO, 6.93f, 6,
+R_H_LINE_TO, -2.95f,
+R_CUBIC_TO, -0.32f, -1.25f, -0.78f, -2.45f, -1.38f, -3.56f,
+R_CUBIC_TO, 1.84f, 0.63f, 3.37f, 1.91f, 4.33f, 3.56f,
+CLOSE,
+MOVE_TO, 12, 4.04f,
+R_CUBIC_TO, 0.83f, 1.2f, 1.48f, 2.53f, 1.91f, 3.96f,
+R_H_LINE_TO, -3.82f,
+R_CUBIC_TO, 0.43f, -1.43f, 1.08f, -2.76f, 1.91f, -3.96f,
+CLOSE,
+MOVE_TO, 4.26f, 14,
+CUBIC_TO, 4.1f, 13.36f, 4, 12.69f, 4, 12,
+R_CUBIC_TO, 0, -0.69f, 0.1f, -1.36f, 0.26f, -2,
+R_H_LINE_TO, 3.38f,
+R_CUBIC_TO, -0.08f, 0.66f, -0.14f, 1.32f, -0.14f, 2,
+R_CUBIC_TO, 0, 0.68f, 0.06f, 1.34f, 0.14f, 2,
+H_LINE_TO, 4.26f,
+CLOSE,
+R_MOVE_TO, 0.82f, 2,
+R_H_LINE_TO, 2.95f,
+R_CUBIC_TO, 0.32f, 1.25f, 0.78f, 2.45f, 1.38f, 3.56f,
+R_CUBIC_TO, -1.84f, -0.63f, -3.37f, -1.9f, -4.33f, -3.56f,
+CLOSE,
+R_MOVE_TO, 2.95f, -8,
+H_LINE_TO, 5.08f,
+R_CUBIC_TO, 0.96f, -1.66f, 2.49f, -2.93f, 4.33f, -3.56f,
+CUBIC_TO, 8.81f, 5.55f, 8.35f, 6.75f, 8.03f, 8,
+CLOSE,
+MOVE_TO, 12, 19.96f,
+R_CUBIC_TO, -0.83f, -1.2f, -1.48f, -2.53f, -1.91f, -3.96f,
+R_H_LINE_TO, 3.82f,
+R_CUBIC_TO, -0.43f, 1.43f, -1.08f, 2.76f, -1.91f, 3.96f,
+CLOSE,
+MOVE_TO, 14.34f, 14,
+H_LINE_TO, 9.66f,
+R_CUBIC_TO, -0.09f, -0.66f, -0.16f, -1.32f, -0.16f, -2,
+R_CUBIC_TO, 0, -0.68f, 0.07f, -1.35f, 0.16f, -2,
+R_H_LINE_TO, 4.68f,
+R_CUBIC_TO, 0.09f, 0.65f, 0.16f, 1.32f, 0.16f, 2,
+R_CUBIC_TO, 0, 0.68f, -0.07f, 1.34f, -0.16f, 2,
+CLOSE,
+R_MOVE_TO, 0.25f, 5.56f,
+R_CUBIC_TO, 0.6f, -1.11f, 1.06f, -2.31f, 1.38f, -3.56f,
+R_H_LINE_TO, 2.95f,
+R_CUBIC_TO, -0.96f, 1.65f, -2.49f, 2.93f, -4.33f, 3.56f,
+CLOSE,
+MOVE_TO, 16.36f, 14,
+R_CUBIC_TO, 0.08f, -0.66f, 0.14f, -1.32f, 0.14f, -2,
+R_CUBIC_TO, 0, -0.68f, -0.06f, -1.34f, -0.14f, -2,
+R_H_LINE_TO, 3.38f,
+R_CUBIC_TO, 0.16f, 0.64f, 0.26f, 1.31f, 0.26f, 2,
+R_CUBIC_TO, 0, 0.69f, -0.1f, 1.36f, -0.26f, 2,
+R_H_LINE_TO, -3.38f,
+CLOSE
\ No newline at end of file

ash/system/locale/locale_feature_pod_controller.cc

@@ -27,9 +27,9 @@ FeaturePodButton* LocaleFeaturePodController::CreateButton() {
       !Shell::Get()->system_tray_model()->locale_list().empty();
   button->SetVisible(visible);
   if (visible) {
-    // TODO(wzang): Add a tooltip.
-    // TODO(wzang): |kUnifiedMenuKeyboardIcon| is a placeholder. Change it.
-    button->SetVectorIcon(kUnifiedMenuKeyboardIcon);
+    button->SetVectorIcon(kUnifiedMenuLocaleIcon);
+    button->SetIconAndLabelTooltips(
+        l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_LOCALE_TOOLTIP));
     button->SetLabel(l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_LOCALE));
     button->ShowDetailedViewArrow();
     button->DisableLabelButtonFocus();