Enable simplified version of RootRenderNode for host

Bug: 117921091
Test: all tests should pass
Change-Id: Iae6e5f37eb11cdcffe29336ce2eda6ab6897385c

libs/hwui/Android.bp

@@ -195,6 +195,7 @@ cc_defaults {
         "RecordingCanvas.cpp",
         "RenderNode.cpp",
         "RenderProperties.cpp",
+        "RootRenderNode.cpp",
         "SkiaCanvas.cpp",
         "VectorDrawable.cpp",
     ],
@@ -250,7 +251,6 @@ cc_defaults {
                 "ProfileData.cpp",
                 "ProfileDataContainer.cpp",
                 "Readback.cpp",
-                "RootRenderNode.cpp",
                 "TreeInfo.cpp",
                 "WebViewFunctorManager.cpp",
                 "protos/graphicsstats.proto",

libs/hwui/Animator.cpp

@@ -155,11 +155,9 @@ void BaseRenderNodeAnimator::pushStaging(AnimationContext& context) {
         RenderNode* oldTarget = mTarget;
         mTarget = mStagingTarget;
         mStagingTarget = nullptr;
-#ifdef __ANDROID__ // Layoutlib does not support RenderNode
         if (oldTarget && oldTarget != mTarget) {
             oldTarget->onAnimatorTargetChanged(this);
         }
-#endif
     }
 
     if (!mHasStartValue) {

libs/hwui/RootRenderNode.cpp

@@ -16,10 +16,13 @@
 
 #include "RootRenderNode.h"
 
+#ifdef __ANDROID__ // Layoutlib does not support Looper (windows)
 #include <utils/Looper.h>
+#endif
 
 namespace android::uirenderer {
 
+#ifdef __ANDROID__ // Layoutlib does not support Looper
 class FinishAndInvokeListener : public MessageHandler {
 public:
     explicit FinishAndInvokeListener(PropertyValuesAnimatorSet* anim) : mAnimator(anim) {
@@ -282,5 +285,22 @@ private:
 AnimationContext* ContextFactoryImpl::createAnimationContext(renderthread::TimeLord& clock) {
     return new AnimationContextBridge(clock, mRootNode);
 }
+#else
+
+void RootRenderNode::prepareTree(TreeInfo& info) {
+    info.errorHandler = mErrorHandler.get();
+    info.updateWindowPositions = true;
+    RenderNode::prepareTree(info);
+    info.updateWindowPositions = false;
+    info.errorHandler = nullptr;
+}
+
+void RootRenderNode::attachAnimatingNode(RenderNode* animatingNode) { }
+
+void RootRenderNode::destroy() { }
+
+void RootRenderNode::addVectorDrawableAnimator(PropertyValuesAnimatorSet* anim) { }
+
+#endif
 
 }  // namespace android::uirenderer

libs/hwui/RootRenderNode.h

@@ -74,6 +74,7 @@ private:
     void detachVectorDrawableAnimator(PropertyValuesAnimatorSet* anim);
 };
 
+#ifdef __ANDROID__ // Layoutlib does not support Animations
 class ANDROID_API ContextFactoryImpl : public IContextFactory {
 public:
     ANDROID_API explicit ContextFactoryImpl(RootRenderNode* rootNode) : mRootNode(rootNode) {}
@@ -84,5 +85,6 @@ public:
 private:
     RootRenderNode* mRootNode;
 };
+#endif
 
 }  // namespace android::uirenderer