Use keyboard icon for deprecated shortcut notification.

Deprecated Shortcut notification was using cogwheel icon.
This CL changes the notification to use more specific keyboard icon.

TEST=manual (Press Shift-Esc)
BUG=792589

Change-Id: I62ed098ade7f3fd3d03bd140553190fed5293bb4
Reviewed-on: https://chromium-review.googlesource.com/818866
Commit-Queue: Tetsui Ohkubo <tetsui@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523672}

ash/accelerators/accelerator_controller.cc

@@ -179,7 +179,7 @@ void ShowDeprecatedAcceleratorNotification(const char* const notification_id,
               system_notifier::kNotifierDeprecatedAccelerator),
           message_center::RichNotificationData(),
           new DeprecatedAcceleratorNotificationDelegate,
-          kNotificationSettingsIcon, SystemNotificationWarningLevel::NORMAL);
+          kNotificationKeyboardIcon, SystemNotificationWarningLevel::NORMAL);
   notification->set_clickable(true);
   message_center::MessageCenter::Get()->AddNotification(
       std::move(notification));

ash/resources/vector_icons/BUILD.gn

@@ -89,6 +89,7 @@ aggregate_vector_icons("ash_vector_icons") {
     "notification_display_error.icon",
     "notification_feedback_button.1x.icon",
     "notification_feedback_button.icon",
+    "notification_keyboard.icon",
     "notification_low_power_battery.icon",
     "notification_monitor_warning.icon",
     "notification_screen.icon",

ash/resources/vector_icons/notification_keyboard.icon

+// 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.
+
+CANVAS_DIMENSIONS, 96,
+MOVE_TO, 80, 20,
+H_LINE_TO, 16,
+R_CUBIC_TO, -4.4f, 0, -7.96f, 3.6f, -7.96f, 8,
+LINE_TO, 8, 68,
+R_CUBIC_TO, 0, 4.4f, 3.6f, 8, 8, 8,
+R_H_LINE_TO, 64,
+R_CUBIC_TO, 4.4f, 0, 8, -3.6f, 8, -8,
+V_LINE_TO, 28,
+R_CUBIC_TO, 0, -4.4f, -3.6f, -8, -8, -8,
+CLOSE,
+MOVE_TO, 44, 32,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+CLOSE,
+R_MOVE_TO, 0, 12,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+CLOSE,
+MOVE_TO, 32, 32,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+CLOSE,
+R_MOVE_TO, 0, 12,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+CLOSE,
+R_MOVE_TO, -4, 8,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 0, -12,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 36, 28,
+H_LINE_TO, 32,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 32,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 0, -16,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 0, -12,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 12, 12,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+R_MOVE_TO, 0, -12,
+R_H_LINE_TO, -8,
+R_V_LINE_TO, -8,
+R_H_LINE_TO, 8,
+R_V_LINE_TO, 8,
+CLOSE,
+END