Reduce meta-data object sizes, introduce meta-data helper classes.

Change-Id: Id14ad218f1c74c659701352fdf1a45bf6444daa3
diff --git a/src/java_lang_reflect_Method.cc b/src/java_lang_reflect_Method.cc
index e36078f..90d718d 100644
--- a/src/java_lang_reflect_Method.cc
+++ b/src/java_lang_reflect_Method.cc
@@ -17,6 +17,7 @@
 #include "jni_internal.h"
 #include "class_linker.h"
 #include "object.h"
+#include "object_utils.h"
 #include "reflection.h"
 
 #include "JniConstants.h" // Last to avoid problems with LOG redefinition.
@@ -25,33 +26,19 @@
 
 namespace {
 
-jint Method_getMethodModifiers(JNIEnv* env, jclass, jclass javaDeclaringClass, jobject jmethod, jint slot) {
-  Method* m = Decode<Object*>(env, jmethod)->AsMethod();
-  jint access_flags = m->GetAccessFlags();
-  // We move the DECLARED_SYNCHRONIZED flag into the SYNCHRONIZED
-  // position, because the callers of this function are trying to convey
-  // the "traditional" meaning of the flags to their callers.
-  access_flags &= ~kAccSynchronized;
-  if ((access_flags & kAccDeclaredSynchronized) != 0) {
-    access_flags |= kAccSynchronized;
-  }
-
-  return access_flags & kAccJavaFlagsMask;
+jobject Method_invoke(JNIEnv* env, jobject javaMethod, jobject javaReceiver, jobject javaArgs) {
+  return InvokeMethod(env, javaMethod, javaReceiver, javaArgs);
 }
 
-jint Method_getProtoIndex(JNIEnv* env, jclass, jclass javaDeclaringClass, jobject jmethod, jint slot) {
-  Method* m = Decode<Object*>(env, jmethod)->AsMethod();
-  return m->GetProtoIdx();
-}
-
-jobject Method_invokeNative(JNIEnv* env, jobject javaMethod, jobject javaReceiver, jobject javaArgs, jclass, jobject javaParams, jclass, jint, jboolean) {
-  return InvokeMethod(env, javaMethod, javaReceiver, javaArgs, javaParams);
+jobject Method_getReturnTypeNative(JNIEnv* env, jobject javaMethod) {
+  Method* m = Decode<Object*>(env, javaMethod)->AsMethod();
+  MethodHelper mh(m);
+  return AddLocalReference<jobject>(env, mh.GetReturnType());
 }
 
 static JNINativeMethod gMethods[] = {
-  NATIVE_METHOD(Method, getMethodModifiers, "(Ljava/lang/Class;Ljava/lang/reflect/AccessibleObject;I)I"),
-  NATIVE_METHOD(Method, getProtoIndex, "(Ljava/lang/Class;Ljava/lang/reflect/AccessibleObject;I)I"),
-  NATIVE_METHOD(Method, invokeNative, "(Ljava/lang/Object;[Ljava/lang/Object;Ljava/lang/Class;[Ljava/lang/Class;Ljava/lang/Class;IZ)Ljava/lang/Object;"),
+  NATIVE_METHOD(Method, invoke, "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;"),
+  NATIVE_METHOD(Method, getReturnTypeNative, "()Ljava/lang/Class;")
 };
 
 }  // namespace