Reland: Do not initialize v8::Context on |ScriptController::updateDocument|.

Source/core/testing/v8/WebCoreTestSupport.cpp

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 23 matching lines @@
 #include "core/frame/LocalFrame.h"
 
 #include <v8.h>
 
 using namespace WebCore;
 
 namespace WebCoreTestSupport {
 
 void injectInternalsObject(v8::Local<v8::Context> context)
 {
+    // This can happen if no JavaScript was used in the main frame.
+    if (context.IsEmpty())
+        return;
+
     v8::Context::Scope contextScope(context);
     v8::HandleScope scope(context->GetIsolate());
     ExecutionContext* scriptContext = currentExecutionContext(context->GetIsolate());
     if (scriptContext->isDocument())
         context->Global()->Set(v8::String::NewFromUtf8(context->GetIsolate(), Internals::internalsId), toV8(Internals::create(toDocument(scriptContext)), v8::Handle<v8::Object>(), context->GetIsolate()));
 }
 
 void resetInternalsObject(v8::Local<v8::Context> context)
 {
     // This can happen if JavaScript is disabled in the main frame.
     if (context.IsEmpty())
         return;
 
     v8::Context::Scope contextScope(context);
     v8::HandleScope scope(context->GetIsolate());
 
     ExecutionContext* scriptContext = currentExecutionContext(context->GetIsolate());
     Page* page = toDocument(scriptContext)->frame()->page();
     ASSERT(page);
     Internals::resetToConsistentState(page);
     InternalSettings::from(*page)->resetToConsistentState();
 }
 
 }