Remove dependencies on headers outside UI module

This includes AndroidRuntime and core_jni_helper.h

Bug: 137655431
Test: CtsUiRenderingTestCases
Change-Id: If3d26f41eaf4981505ee47634097f3645fd563fd
diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index 954e4da..1715a27 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -203,6 +203,11 @@
                 "apex/renderthread.cpp",
             ],
         },
+        host: {
+            srcs: [
+                "apex/LayoutlibLoader.cpp",
+            ],
+        }
     },
 }