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/runtime/jni_internal.h b/runtime/jni_internal.h
index fcac481..e3ffc84 100644
--- a/runtime/jni_internal.h
+++ b/runtime/jni_internal.h
@@ -38,10 +38,10 @@
 
 namespace art {
 namespace mirror {
-class AbstractMethod;
-class ClassLoader;
-class Field;
-}
+  class ArtField;
+  class ArtMethod;
+  class ClassLoader;
+}  // namespace mirror
 class ArgArray;
 union JValue;
 class Libraries;
@@ -55,7 +55,7 @@
 
 JValue InvokeWithJValues(const ScopedObjectAccess&, jobject obj, jmethodID mid, jvalue* args)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
-void InvokeWithArgArray(const ScopedObjectAccess& soa, mirror::AbstractMethod* method,
+void InvokeWithArgArray(const ScopedObjectAccess& soa, mirror::ArtMethod* method,
                         ArgArray *arg_array, JValue* result, char result_type)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
@@ -79,7 +79,7 @@
    * Returns a pointer to the code for the native method 'm', found
    * using dlsym(3) on every native library that's been loaded so far.
    */
-  void* FindCodeForNativeMethod(mirror::AbstractMethod* m)
+  void* FindCodeForNativeMethod(mirror::ArtMethod* m)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   void DumpForSigQuit(std::ostream& os);