SF: move setupHwComposer logic to FE function

One step towards separating FE from BE.  The logic that
traditionally has been in setupHwComposer will be in
a function named calculateWorkingSet as the function
named setUpHwComposer will handle different functionality.

Bug: 112259502
Test: cts -m CtsViewTestCases
      SurfaceFlinger_test
      vrflinger_test

Change-Id: If4c2735898969ab15de42cbd9eb5f08a7a26b545
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 5ceea3a..3bef9f5 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -667,7 +667,7 @@
     void pickColorMode(const sp<DisplayDevice>& display, ui::ColorMode* outMode,
                        ui::Dataspace* outDataSpace, ui::RenderIntent* outRenderIntent) const;
 
-    void setUpHWComposer();
+    void calculateWorkingSet();
     void doComposition();
     void doDebugFlashRegions();
     void doTracing(const char* where);