Rename SubSettingLauncher.setTitle, add java doc

For make this method usage more clear,
setTitle(charSequence) rename as setTitleText,
add java doc: it is only for user generated string
setTitle(int) rename as setTitleRes.

Change-Id: I972cb6a8ff90873dfdc25c23f6dc3d68103c8e4e
Fixes: 78347436
Test: make RunSettingsRoboTests

src/com/android/settings/connecteddevice/usb/ConnectedUsbDeviceUpdater.java

@@ -82,7 +82,7 @@ public class ConnectedUsbDeviceUpdater {
             // New version - uses a separate screen.
             new SubSettingLauncher(mFragment.getContext())
                     .setDestination(UsbDetailsFragment.class.getName())
-                    .setTitle(R.string.device_details_title)
+                    .setTitleRes(R.string.device_details_title)
                     .setSourceMetricsCategory(mFragment.getMetricsCategory())
                     .launch();
             return true;