Change Icon for app icon dismiss action

Bug: 145556909
Test: Manual
Change-Id: Icb55f813c76b4cc8e6052b1f6eb6586230727bb9

res/drawable/ic_block.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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:viewportHeight="24.0"
+    android:viewportWidth="24.0"
+    android:tint="?android:attr/textColorPrimary">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M12,2C6.48,2,2,6.48,2,12s4.48,10,10,10s10-4.48,10-10S17.52,2,12,2z M4,12c0-4.42,3.58-8,8-8c1.85,0,3.55,0.63,4.9,1.69
+	L5.69,16.9C4.63,15.55,4,13.85,4,12z M12,20c-1.85,0-3.55-0.63-4.9-1.69L18.31,7.1C19.37,8.45,20,10.15,20,12
+	C20,16.42,16.42,20,12,20z" />
+</vector>

src/com/android/launcher3/popup/SystemShortcut.java

@@ -187,7 +187,7 @@ public abstract class SystemShortcut<T extends BaseDraggingActivity> extends Ite
 
     public static class DismissPrediction extends SystemShortcut<Launcher> {
         public DismissPrediction(Launcher launcher, ItemInfo itemInfo) {
-            super(R.drawable.ic_remove_no_shadow, R.string.dismiss_prediction_label, launcher,
+            super(R.drawable.ic_block, R.string.dismiss_prediction_label, launcher,
                     itemInfo);
         }