Eliminate "temporary" and "uninitialized" isolated worlds

Source/WebKit/chromium/src/WebFrameImpl.cpp

 /*
  * Copyright (C) 2009 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 772 matching lines @@
 void WebFrameImpl::executeScript(const WebScriptSource& source)
 {
     ASSERT(frame());
     TextPosition position(OrdinalNumber::fromOneBasedInt(source.startLine), OrdinalNumber::first());
     frame()->script()->executeScript(ScriptSourceCode(source.code, source.url, position));
 }
 
 void WebFrameImpl::executeScriptInIsolatedWorld(int worldID, const WebScriptSource* sourcesIn, unsigned numSources, int extensionGroup)
 {
     ASSERT(frame());
+    ASSERT(worldID > 0);
 
     Vector<ScriptSourceCode> sources;
     for (unsigned i = 0; i < numSources; ++i) {
         TextPosition position(OrdinalNumber::fromOneBasedInt(sourcesIn[i].startLine), OrdinalNumber::first());
         sources.append(ScriptSourceCode(sourcesIn[i].code, sourcesIn[i].url, position));
     }
 
     frame()->script()->evaluateInIsolatedWorld(worldID, sources, extensionGroup, 0);
 }
 
@@ skipping 60 matching lines @@
     // http://code.google.com/p/chromium/issues/detail?id=86397
     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
 
     TextPosition position(OrdinalNumber::fromOneBasedInt(source.startLine), OrdinalNumber::first());
     return frame()->script()->executeScript(ScriptSourceCode(source.code, source.url, position)).v8Value();
 }
 
 void WebFrameImpl::executeScriptInIsolatedWorld(int worldID, const WebScriptSource* sourcesIn, unsigned numSources, int extensionGroup, WebVector<v8::Local<v8::Value> >* results)
 {
     ASSERT(frame());
+    ASSERT(worldID > 0);
 
     Vector<ScriptSourceCode> sources;
 
     for (unsigned i = 0; i < numSources; ++i) {
         TextPosition position(OrdinalNumber::fromOneBasedInt(sourcesIn[i].startLine), OrdinalNumber::first());
         sources.append(ScriptSourceCode(sourcesIn[i].code, sourcesIn[i].url, position));
     }
 
     if (results) {
         Vector<ScriptValue> scriptResults;
@@ skipping 1613 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace WebKit