ART: Detach libart-disassembler from libart

Some more intrusive changes than I would have liked, as long as
ART logging is different from libbase logging.

Fix up some includes.

Bug: 15436106
Bug: 31338270
Test: m test-art-host
Change-Id: I9fbe4b85b2d74e079a4981f3aec9af63b163a461
diff --git a/runtime/utils/dex_cache_arrays_layout-inl.h b/runtime/utils/dex_cache_arrays_layout-inl.h
index 4c63156..a85d033 100644
--- a/runtime/utils/dex_cache_arrays_layout-inl.h
+++ b/runtime/utils/dex_cache_arrays_layout-inl.h
@@ -55,7 +55,8 @@
 
 template <typename T>
 static constexpr PointerSize GcRootAsPointerSize() {
-  return ConvertToPointerSize(sizeof(GcRoot<T>));
+  static_assert(sizeof(GcRoot<T>) == 4U, "Unexpected GcRoot size");
+  return PointerSize::k32;
 }
 
 inline size_t DexCacheArraysLayout::TypeOffset(uint32_t type_idx) const {