Use visitDOMWrapper to preserve WebGL JS object wrappers

third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp
index f5370cb50413efde620cf9409ffcbb5097405bac..cf62216ccfc754169b1362ddaf8a31adc7b4235b 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLVertexArrayObjectBase.cpp
@@ -140,9 +140,13 @@ void WebGLVertexArrayObjectBase::unbindBuffer(WebGLBuffer* buffer)
     updateAttribBufferBoundStatus();
 }
 
-ScopedPersistent<v8::Array>* WebGLVertexArrayObjectBase::getPersistentCache()
+void WebGLVertexArrayObjectBase::visitChildDOMWrappers(v8::Isolate* isolate, const v8::Persistent<v8::Object>& wrapper)
 {
-    return &m_arrayBufferWrappers;
+    trySetWrapperReferencesInAllWorlds(wrapper, this, isolate);

[Ken Russell (switch to Gerrit), 2016/09/01 21:03:53]

Same comment here.

[Kai Ninomiya, 2016/09/02 18:29:22]

Done.

+    trySetWrapperReferencesInAllWorlds(wrapper, m_boundElementArrayBuffer, isolate);
+    for (size_t i = 0; i < m_arrayBufferList.size(); ++i) {
+        trySetWrapperReferencesInAllWorlds(wrapper, m_arrayBufferList[i], isolate);
+    }
 }
 
 DEFINE_TRACE(WebGLVertexArrayObjectBase)