Rename ColorLayer to EffectLayer to handle both shadows and color fill

We want the ability for a layer to render shadows without any content.
This new layer type will be able to combine effects as needed.

Test: presubmit tests (no functional changes)
Test: go/wm-smoke
Change-Id: I8663d126a23263a3d7dc799d39a9cf44b3b6e4a0
diff --git a/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp b/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
index f9658a7..d49133d 100644
--- a/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
+++ b/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
@@ -25,9 +25,9 @@
 #include "BufferLayerConsumer.h"
 #include "BufferQueueLayer.h"
 #include "BufferStateLayer.h"
-#include "ColorLayer.h"
 #include "ContainerLayer.h"
 #include "DisplayDevice.h"
+#include "EffectLayer.h"
 #include "Layer.h"
 #include "MonitoredProducer.h"
 #include "NativeWindowSurface.h"
@@ -139,8 +139,8 @@
     return new BufferStateLayer(args);
 }
 
-sp<ColorLayer> DefaultFactory::createColorLayer(const LayerCreationArgs& args) {
-    return new ColorLayer(args);
+sp<EffectLayer> DefaultFactory::createEffectLayer(const LayerCreationArgs& args) {
+    return new EffectLayer(args);
 }
 
 } // namespace android::surfaceflinger