SF: Separate out render surface code

This creates a new class for the purpose of holding all the
functionality related to flipping the output display surface.

Test: atest libsurfaceflinger_unittest libcompositionengine_test
Bug: 121291683
Change-Id: I108ccb75f3cd6aa1204487b0aed7c67d9fe1b85f
diff --git a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
index ba86be7..c497013 100644
--- a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
@@ -79,6 +79,10 @@
     transform.dump(out, name);
 }
 
+void dumpVal(std::string& out, const char* name, const ui::Size& size) {
+    StringAppendF(&out, "%s=[%d %d] ", name, size.width, size.height);
+}
+
 void dumpVal(std::string& out, const char* name, const mat4& tr) {
     StringAppendF(&out,
                   "%s=["