Refactor java.lang.reflect implementation

Cherry-picked from commit ed41d5c44299ec5d44b8514f6e17f802f48094d1.

Move to ArtMethod/Field instead of AbstractMethod/Field and have
java.lang.reflect APIs delegate to ArtMethod/ArtField.

Bug: 10014286.

Change-Id: Iafc1d8c5b62562c9af8fb9fd8c5e1d61270536e7
diff --git a/compiler/llvm/compiler_llvm.h b/compiler/llvm/compiler_llvm.h
index 20934ab..65bc16b 100644
--- a/compiler/llvm/compiler_llvm.h
+++ b/compiler/llvm/compiler_llvm.h
@@ -34,7 +34,7 @@
   class CompilerDriver;
   class DexCompilationUnit;
   namespace mirror {
-    class AbstractMethod;
+    class ArtMethod;
     class ClassLoader;
   }  // namespace mirror
 }  // namespace art