Revert "Combine direct_methods_ and virtual_methods_ fields of mirror::Class"

This reverts commit 6286a97bea0f584342803a215550038852b24776.

Change-Id: I5b00f6d1350e9c587acd4b185367dc815ea707de
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc
index 66060f2..05a9039 100644
--- a/runtime/mirror/class.cc
+++ b/runtime/mirror/class.cc
@@ -457,10 +457,6 @@
   return nullptr;
 }
 
-// TODO These should maybe be changed to be named FindOwnedVirtualMethod or something similar
-// because they do not only find 'declared' methods and will return copied methods. This behavior is
-// desired and correct but the naming can lead to confusion because in the java language declared
-// excludes interface methods which might be found by this.
 ArtMethod* Class::FindDeclaredVirtualMethod(const StringPiece& name, const StringPiece& signature,
                                             size_t pointer_size) {
   for (auto& method : GetVirtualMethods(pointer_size)) {
@@ -486,8 +482,10 @@
 ArtMethod* Class::FindDeclaredVirtualMethod(const DexCache* dex_cache, uint32_t dex_method_idx,
                                             size_t pointer_size) {
   if (GetDexCache() == dex_cache) {
-    for (auto& method : GetDeclaredVirtualMethods(pointer_size)) {
-      if (method.GetDexMethodIndex() == dex_method_idx) {
+    for (auto& method : GetVirtualMethods(pointer_size)) {
+      // A miranda method may have a different DexCache and is always created by linking,
+      // never *declared* in the class.
+      if (method.GetDexMethodIndex() == dex_method_idx && !method.IsMiranda()) {
         return &method;
       }
     }
@@ -727,7 +725,12 @@
 
 void Class::SetPreverifiedFlagOnAllMethods(size_t pointer_size) {
   DCHECK(IsVerified());
-  for (auto& m : GetMethods(pointer_size)) {
+  for (auto& m : GetDirectMethods(pointer_size)) {
+    if (!m.IsNative() && m.IsInvokable()) {
+      m.SetPreverified();
+    }
+  }
+  for (auto& m : GetVirtualMethods(pointer_size)) {
     if (!m.IsNative() && m.IsInvokable()) {
       m.SetPreverified();
     }