SF: Add back debug control of HWC use

My changes to refactor Layer::setPerFrameData ended up dropping the
ability to force client composition if either mDebugDisableHWC or
mDebugRegion were set.

This simply adds back a check on those flags to force client
composition.

Test: Set "Disable HW overlays" developer option
Bug: 38853920

Change-Id: Ia31cca8232a95b081b1565921b18acd69fb02757
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 213160d..4ca940e 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1904,6 +1904,10 @@
         auto display = displayDevice->getCompositionDisplay();
 
         for (auto& layer : display->getOutputLayersOrderedByZ()) {
+            if (mDebugDisableHWC || mDebugRegion) {
+                layer->editState().forceClientComposition = true;
+            }
+
             // Update the composition state of the output layer, as needed
             // recomputing it from the state given by the front-end layer.
             layer->updateCompositionState(updatingGeometryThisFrame);