Use new icon for lockdown global action

Test: Verified new icon
Bug: 37221346
Change-Id: I16fcf11368a6ae00be3c388b3cc3e7a299cc61b9

packages/SystemUI/res/drawable/ic_lock_lockdown.xml

@@ -0,0 +1,25 @@
+<!--
+Copyright (C) 2018 The Android Open Source Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+
+    <path
+        android:fillColor="#757575"
+        android:pathData="M18.0,8.0l-1.0,0.0L17.0,6.0c0.0,-2.8 -2.2,-5.0 -5.0,-5.0C9.2,1.0 7.0,3.2 7.0,6.0l0.0,2.0L6.0,8.0c-1.1,0.0 -2.0,0.9 -2.0,2.0l0.0,10.0c0.0,1.1 0.9,2.0 2.0,2.0l12.0,0.0c1.1,0.0 2.0,-0.9 2.0,-2.0L20.0,10.0C20.0,8.9 19.1,8.0 18.0,8.0zM12.0,17.0c-1.1,0.0 -2.0,-0.9 -2.0,-2.0s0.9,-2.0 2.0,-2.0c1.1,0.0 2.0,0.9 2.0,2.0S13.1,17.0 12.0,17.0zM15.1,8.0L8.9,8.0L8.9,6.0c0.0,-1.7 1.4,-3.1 3.1,-3.1c1.7,0.0 3.1,1.4 3.1,3.1L15.1,8.0z"/>
+</vector>

packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java

@@ -688,7 +688,7 @@ class GlobalActionsDialog implements DialogInterface.OnDismissListener,
     }
 
     private Action getLockdownAction() {
-        return new SinglePressAction(R.drawable.ic_lock_lock,
+        return new SinglePressAction(com.android.systemui.R.drawable.ic_lock_lockdown,
                 R.string.global_action_lockdown) {
 
             @Override