Give each preference screen its own activity and toolbar title

This change is in preparation for each preference screen having its own collapsible toolbar with its specific title.

Test: Subsettings open with activity transition and title changes
Bug: 187732263
Change-Id: Iac44d688539195ddb6c2aca0a96d737ce7727071
diff --git a/robolectric_tests/Android.bp b/robolectric_tests/Android.bp
index bf32362..9ed26ff 100644
--- a/robolectric_tests/Android.bp
+++ b/robolectric_tests/Android.bp
@@ -45,9 +45,14 @@
     java_resources: [":launcher3-robolectric-resources"],
     static_libs: [
         "truth-prebuilt",
+        "androidx.test.espresso.contrib",
+        "androidx.test.espresso.core",
+        "androidx.test.espresso.intents",
+        "androidx.test.ext.junit",
         "androidx.test.runner",
         "androidx.test.rules",
         "mockito-robolectric-prebuilt",
+        "SystemUISharedLib",
     ],
     robolectric_prebuilt_version: "4.5.1",
     instrumentation_for: "Launcher3",