Update preference screen title.

- Add missing title to preference screen xml so that they will be used to
set the activity title when the fragment is launched.
- Also updated some incorrect preference screen titles.
- Overrides getTitle() in preference fragments that do not use the
preference screen xml.

Bug: 64564191
Test: blaze-bin/screenshots/android/i18nscreenshots/i18nscreenshots
Change-Id: Id72d5ddf18f0962bc484de8bbd847a2e55d6371e

src/com/android/settings/MasterClear.java

@@ -21,6 +21,7 @@ import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
 import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.accounts.AuthenticatorDescription;
+import android.annotation.StringRes;
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.ContentResolver;
@@ -91,6 +92,12 @@ public class MasterClear extends OptionsMenuFragment {
         }
     };
 
+    @Override
+    @StringRes
+    protected int getTitle() {
+        return R.string.master_clear_title;
+    }
+
     /**
      * Keyguard validation is run using the standard {@link ConfirmLockPattern}
      * component as a subactivity