ScriptState::contextIsEmpty shouldn't return true for a context whose global object is detached

Source/web/WebPluginContainerImpl.cpp

Index: Source/web/WebPluginContainerImpl.cpp
diff --git a/Source/web/WebPluginContainerImpl.cpp b/Source/web/WebPluginContainerImpl.cpp
index 939d0b31b9827c7bce42271251d015d8da90a85f..b300a9710b30b6e0a3612bd95cf98d54e6cfb927 100644
--- a/Source/web/WebPluginContainerImpl.cpp
+++ b/Source/web/WebPluginContainerImpl.cpp
@@ -432,7 +432,7 @@ v8::Local<v8::Object> WebPluginContainerImpl::v8ObjectForElement()
         return v8::Local<v8::Object>();
 
     ScriptState* scriptState = ScriptState::forMainWorld(frame);
-    if (scriptState->contextIsEmpty())
+    if (scriptState->contextIsValue())
         return v8::Local<v8::Object>();
 
     v8::Handle<v8::Value> v8value = toV8(m_element, scriptState->context()->Global(), scriptState->isolate());