Create a page to manage dnd permission for individual app

- Change the original ZenAccessPage to
  - Remove the inline switch
  - Make the preference click target go into the new detail page
  - Some formatting/style change.

- Create a new detail page for zen access.
  - Exit if app didn't declare this permission
  - Preset the switch toggle to their current permission grant state
  - Move the warning dialog logic from ZenAccessSettings to here.

- Move some common functionality into ZenAccessController, a static
  helper class

Bug: 128547723
Test: robotest
Change-Id: I1ebb32396869d07ff4283b300bd716506298c9b5

tests/robotests/src/com/android/settings/testutils/shadow/ShadowNotificationManager.java

@@ -19,15 +19,19 @@ package com.android.settings.testutils.shadow;
 import android.app.NotificationManager;
 import android.net.Uri;
 import android.service.notification.ZenModeConfig;
+import android.util.ArraySet;
 
 import org.robolectric.annotation.Implementation;
 import org.robolectric.annotation.Implements;
 
+import java.util.Set;
+
 @Implements(NotificationManager.class)
 public class ShadowNotificationManager {
 
     private int mZenMode;
     private ZenModeConfig mZenModeConfig;
+    private Set<String> mNotificationPolicyGrantedPackages = new ArraySet<>();
 
     @Implementation
     protected void setZenMode(int mode, Uri conditionId, String reason) {
@@ -39,6 +43,11 @@ public class ShadowNotificationManager {
         return mZenMode;
     }
 
+    @Implementation
+    protected boolean isNotificationPolicyAccessGrantedForPackage(String pkg) {
+        return mNotificationPolicyGrantedPackages.contains(pkg);
+    }
+
     @Implementation
     public ZenModeConfig getZenModeConfig() {
         return mZenModeConfig;
@@ -47,4 +56,8 @@ public class ShadowNotificationManager {
     public void setZenModeConfig(ZenModeConfig config) {
         mZenModeConfig = config;
     }
+
+    public void setNotificationPolicyAccessGrantedForPackage(String pkg) {
+        mNotificationPolicyGrantedPackages.add(pkg);
+    }
 }