Switch from HIDL Composition type to AIDL

In preparation for adding a new Composition type which is only in AIDL.
This change is almost completely mechanical, and should have no impact
on behavior.

Bug: 193170859
Test: existing tests

Change-Id: I1f923fcc8d8e6dff388493a76e31d435638b5255
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 100a78d..0067997 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -270,7 +270,8 @@
         layer->editCompositionState()->sidebandStream = sidebandStream;
     }
 
-    void setLayerCompositionType(const sp<Layer>& layer, hal::Composition type) {
+    void setLayerCompositionType(const sp<Layer>& layer,
+                                 aidl::android::hardware::graphics::composer3::Composition type) {
         auto outputLayer = findOutputLayerForDisplay(layer, mFlinger->getDefaultDisplayDevice());
         LOG_ALWAYS_FATAL_IF(!outputLayer);
         auto& state = outputLayer->editState();