[multivm] Re-split fields for V8 and Dart wrappers.

Source/bindings/dart/DartScriptWrappable.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #ifndef DartScriptWrappable_h
 #define DartScriptWrappable_h
 
 #include "bindings/common/ScriptWrappable.h"
 
 namespace blink {
 
 class DartWrapperInfo {
 public:
-    ScriptWrappable::TaggedPointer v8WrapperOrEmpty;
     void* domData;
     void* wrapper;
 };
 
 class DartMultiWrapperInfo {
 public:
-    ScriptWrappable::TaggedPointer v8WrapperOrEmpty;
     Vector<void*> domDatas;
     Vector<void*> wrappers;
 };
 
-inline ScriptWrappable::TaggedPointer ScriptWrappable::getV8WrapperOrEmpty() const
-{
-    if (LIKELY(m_wrapper.isV8WrapperOrEmpty())) {
-      return m_wrapper;
-    }
-    if (UNLIKELY(m_wrapper.isDartWrapperInfo())) {
-        return m_wrapper.dartWrapperInfo()->v8WrapperOrEmpty;
-    }
-    ASSERT(m_wrapper.isDartMultiWrapperInfo());
-    return m_wrapper.dartMultiWrapperInfo()->v8WrapperOrEmpty;
-}
-
 void ScriptWrappable::setDartWrapper(void* domData, void* wrapper)
 {
     ASSERT(domData);
-    if (LIKELY(m_wrapper.isEmpty() || m_wrapper.isV8Wrapper())) {
+    if (LIKELY(m_dartWrapperInfo.isEmpty())) {
         DartWrapperInfo* wrapperInfo = new DartWrapperInfo;
-        wrapperInfo->v8WrapperOrEmpty = m_wrapper;
         wrapperInfo->domData = domData;
         wrapperInfo->wrapper = wrapper;
-        m_wrapper = TaggedPointer(wrapperInfo);
-    } else if (m_wrapper.isDartWrapperInfo()) {
-        DartWrapperInfo* wrapperInfo = m_wrapper.dartWrapperInfo();
+        m_dartWrapperInfo = TaggedPointer(wrapperInfo);
+    } else if (m_dartWrapperInfo.isDartWrapperInfo()) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
         if (wrapperInfo->domData == domData) {
             // Replace the current wrapper (e.g., upgrading a custom element).
             wrapperInfo->wrapper = wrapper;
         } else {
             // Inflate to a multiwrapper, unimplemented.
             ASSERT_NOT_REACHED();
         }
     } else {
-        ASSERT(m_wrapper.isDartMultiWrapperInfo());
+        ASSERT(m_dartWrapperInfo.isDartMultiWrapperInfo());
         // Replace or append wrapper, unimplemented.
         ASSERT_NOT_REACHED();
     }
 }
 
 void* ScriptWrappable::getDartWrapper(void* domData) const
 {
     ASSERT(domData);
-    if (m_wrapper.isDartWrapperInfo()) {
-        DartWrapperInfo* wrapperInfo = m_wrapper.dartWrapperInfo();
+    if (m_dartWrapperInfo.isDartWrapperInfo()) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
         if (wrapperInfo->domData == domData) {
             return wrapperInfo->wrapper;
         }
         return 0;
     }
-    if (m_wrapper.isDartMultiWrapperInfo()) {
-        DartMultiWrapperInfo* wrapperInfo = m_wrapper.dartMultiWrapperInfo();
+    if (m_dartWrapperInfo.isDartMultiWrapperInfo()) {
+        DartMultiWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartMultiWrapperInfo();
         for (unsigned i = 0; i < wrapperInfo->domDatas.size(); ++i) {
             if (wrapperInfo->domDatas.at(i) == domData) {
                 return wrapperInfo->wrappers.at(i);
             }
         }
         return 0;
     }
-    ASSERT(m_wrapper.isEmpty() || m_wrapper.isV8Wrapper());
+    ASSERT(m_wrapper.isEmpty());
     return 0;
 }
 
 void ScriptWrappable::clearDartWrapper(void* wrapper)
 {
-    if (LIKELY(m_wrapper.isDartWrapperInfo())) {
-        DartWrapperInfo* wrapperInfo = m_wrapper.dartWrapperInfo();
+    if (LIKELY(m_dartWrapperInfo.isDartWrapperInfo())) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
         // ASSERT(Dart_IdentityEquals(wrapper, wrapperInfo->wrapper));
-        m_wrapper = wrapperInfo->v8WrapperOrEmpty;
+        m_dartWrapperInfo = TaggedPointer();
         delete wrapperInfo;
-    } else if (m_wrapper.isDartMultiWrapperInfo()) {
+    } else if (m_dartWrapperInfo.isDartMultiWrapperInfo()) {
         // Remove or deflate, unimplemented.
         ASSERT_NOT_REACHED();
     } else {
         // Already clear.
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink
 
 #endif // DartScriptWrappable_h