Update cast setting icon

Change-Id: Id5cbe994f58c3daea4c70ffd76718ac56389a610
Fix: 35407157
Test: manual

AndroidManifest.xml

@@ -2109,7 +2109,7 @@
 
         <activity android:name="Settings$WifiDisplaySettingsActivity"
                 android:label="@string/wifi_display_settings_title"
-                android:icon="@drawable/ic_settings_display"
+                android:icon="@drawable/ic_cast_24dp"
                 android:taskAffinity="">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.CAST_SETTINGS" />

res/drawable/ic_cast_24dp.xml

@@ -0,0 +1,26 @@
+<!--
+  Copyright (C) 2017 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="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0"
+        android:tint="?android:attr/colorControlNormal">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M21,3L3,3c-1.1,0 -2,0.9 -2,2v3h2L3,5h18v14h-7v2h7c1.1,0 2,-0.9 2,-2L23,5c0,-1.1 -0.9,-2 -2,-2zM1,18v3h3c0,-1.66 -1.34,-3 -3,-3zM1,14v2c2.76,0 5,2.24 5,5h2c0,-3.87 -3.13,-7 -7,-7zM1,10v2c4.97,0 9,4.03 9,9h2c0,-6.08 -4.93,-11 -11,-11z"/>
+</vector>