Update the manage button to the new style

Also fixes a bug where the overflow view would still leave space
for the manage button even though we don't show something there.

Bug: 183658858
Test: manual - open a bubble and observe the manage button, should
               be on a dark background with light text regardless
               of light / dark theme.
Change-Id: Ie3f67ccd26ad4d75a3ed21a3dee43e2f74d07022

libs/WindowManager/Shell/res/drawable/bubble_manage_btn_bg.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 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:color/system_neutral1_900"
+        />
+    <corners android:radius="20dp" />
+
+    <padding
+        android:left="20dp"
+        android:right="20dp">
+    </padding>
+
+</shape>

libs/WindowManager/Shell/res/layout/bubble_expanded_view.xml

@@ -28,15 +28,18 @@
     />
 
     <com.android.wm.shell.common.AlphaOptimizedButton
-        style="@android:style/Widget.Material.Button.Borderless"
+        style="@android:style/Widget.DeviceDefault.Button.Borderless"
         android:id="@+id/settings_button"
         android:layout_gravity="start"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_height="40dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginLeft="8dp"
         android:focusable="true"
         android:text="@string/manage_bubbles_text"
         android:textSize="@*android:dimen/text_size_body_2_material"
-        android:textColor="?android:attr/textColorPrimary"
+        android:background="@drawable/bubble_manage_btn_bg"
+        android:textColor="@*android:color/system_neutral1_50"
     />
 
 </com.android.wm.shell.bubbles.BubbleExpandedView>

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleExpandedView.java

@@ -651,11 +651,12 @@ public class BubbleExpandedView extends LinearLayout {
                 // Remove top insets back here because availableRect.height would account for that
                 ? mExpandedViewContainerLocation[1] - mPositioner.getInsets().top
                 : 0;
+        int settingsHeight = mIsOverflow ? 0 : mSettingsIconHeight;
         return mPositioner.getAvailableRect().height()
                 - expandedContainerY
                 - getPaddingTop()
                 - getPaddingBottom()
-                - mSettingsIconHeight
+                - settingsHeight
                 - mPointerHeight
                 - mPointerMargin;
     }