RESTRICT AUTOMERGE
Allow LockScreenPattern to be launched in the pinning screen

If work profile lock is enabled and work app is pinned, users will get a
black/white screen on the phone. That's because Settings is prevented
from other apps launch any pages of Settings in the pinning mode.

In order to launch some pages of Settings from other apps, we add a
condition to the preventive mechanism and allow the activity inherited
from SettingsBaseActivity to override the condition to have the activity
to be launched from other apps in the pinning mode.

Bug: 137015265
Bug: 135604684
Test: manual test
Change-Id: I8070de79a83350d1658efcb19e983669dad0e673
(cherry picked from commit 077dd9b07f7cb6835f1717ea2f2700f2d13b37bb)
diff --git a/src/com/android/settings/core/SettingsBaseActivity.java b/src/com/android/settings/core/SettingsBaseActivity.java
index 6e37b16..993c9b0 100644
--- a/src/com/android/settings/core/SettingsBaseActivity.java
+++ b/src/com/android/settings/core/SettingsBaseActivity.java
@@ -63,7 +63,7 @@
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (isLockTaskModePinned() && !isSettingsRunOnTop()) {
+        if (isLockTaskModePinned() && !isSettingsRunOnTop() && !isLaunchableInTaskModePinned()) {
             Log.w(TAG, "Devices lock task mode pinned.");
             finish();
         }
@@ -147,6 +147,13 @@
         ((ViewGroup) findViewById(R.id.content_frame)).addView(view, params);
     }
 
+    /**
+     * @return whether or not the activity can be launched from other apps in the pinning screen.
+     */
+    public boolean isLaunchableInTaskModePinned() {
+        return false;
+    }
+
     private void onCategoriesChanged() {
         final int N = mCategoryListeners.size();
         for (int i = 0; i < N; i++) {
diff --git a/src/com/android/settings/password/ConfirmDeviceCredentialBaseActivity.java b/src/com/android/settings/password/ConfirmDeviceCredentialBaseActivity.java
index 5407776..e797bee 100644
--- a/src/com/android/settings/password/ConfirmDeviceCredentialBaseActivity.java
+++ b/src/com/android/settings/password/ConfirmDeviceCredentialBaseActivity.java
@@ -188,6 +188,11 @@
         }
     }
 
+    @Override
+    public boolean isLaunchableInTaskModePinned() {
+        return true;
+    }
+
     public void prepareEnterAnimation() {
         getFragment().prepareEnterAnimation();
     }