Show work switch tip

This shows a tip view on the third visit to work tab

Bug: 151407879
Test: Manual
Change-Id: Ia28860e97113f8a9c246c3a82b0a1da4a53d8e07
diff --git a/res/drawable/arrow_toast_rounded_background.xml b/res/drawable/arrow_toast_rounded_background.xml
new file mode 100644
index 0000000..52cc6fc
--- /dev/null
+++ b/res/drawable/arrow_toast_rounded_background.xml
@@ -0,0 +1,19 @@
+<!--
+    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.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="?android:attr/colorAccent" />
+    <corners android:radius="8dp" />
+</shape>
diff --git a/res/layout/arrow_toast.xml b/res/layout/arrow_toast.xml
new file mode 100644
index 0000000..087e45a
--- /dev/null
+++ b/res/layout/arrow_toast.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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.
+-->
+
+<merge
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content">
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:paddingStart="24dp"
+        android:paddingEnd="4dp"
+        android:background="@drawable/arrow_toast_rounded_background"
+        android:layout_gravity="center_horizontal"
+        android:elevation="2dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/text"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:layout_gravity="center_vertical"
+            android:textColor="@android:color/white"
+            android:textSize="16sp"/>
+        <ImageView
+            android:id="@+id/dismiss"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:layout_gravity="center_vertical"
+            android:padding="10dp"
+            android:layout_marginStart="2dp"
+            android:layout_marginEnd="2dp"
+            android:alpha="0.7"
+            android:src="@drawable/ic_remove_no_shadow"
+            android:tint="@android:color/white"
+            android:background="?android:attr/selectableItemBackgroundBorderless"
+            android:contentDescription="@string/accessibility_close"/>
+    </LinearLayout>
+
+    <View
+        android:id="@+id/arrow"
+        android:elevation="2dp"
+        android:layout_width="10dp"
+        android:layout_height="8dp"
+        android:layout_marginTop="-2dp"
+        android:layout_gravity="center_horizontal"/>
+</merge>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 871651d..271511e 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -85,6 +85,10 @@
     <dimen name="all_apps_tabs_side_padding">12dp</dimen>
     <dimen name="all_apps_divider_height">1dp</dimen>
 
+    <dimen name="all_apps_tip_bottom_margin">8dp</dimen>
+    <!-- The size of corner radius of the arrow in the arrow toast. -->
+    <dimen name="arrow_toast_corner_radius">2dp</dimen>
+
     <dimen name="all_apps_work_profile_tab_footer_padding">20dp</dimen>
 
 <!-- Search bar in All Apps -->
diff --git a/res/values/strings.xml b/res/values/strings.xml
index b1077be..ac04262 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -316,6 +316,9 @@
     <!-- Accessibility action to dismiss a notification in the shortcuts menu for an icon. [CHAR_LIMIT=30] -->
     <string name="action_dismiss_notification">Dismiss</string>
 
+    <!-- Content description for arrow tip close button. [CHAR LIMIT=NONE] -->
+    <string name="accessibility_close">Close</string>
+
     <!-- Accessibility confirmation for notification being dismissed. -->
     <string name="notification_dismissed">Notification dismissed</string>