Fixing wrong extension ID in Activity Log entries.

Source/bindings/v8/V8WindowShell.cpp

 /*
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  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
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@@ skipping 194 matching lines @@
             return false;
         }
     }
 
     if (!m_world->isMainWorld()) {
         V8WindowShell* mainWindow = m_frame->script().existingWindowShell(DOMWrapperWorld::mainWorld());
         if (mainWindow && !mainWindow->context().IsEmpty())
             setInjectedScriptContextDebugId(context, m_frame->script().contextDebugId(mainWindow->context()));
     }
 
-    m_scriptState->perContextData()->setActivityLogger(V8DOMActivityLogger::activityLogger(m_world->worldId()));
+    m_scriptState->perContextData()->setActivityLogger(

[haraken, 2014/04/30 00:54:20]

It's mis-designed that ActivityLogger is cached on V8PerContextData.
ActivityLogger is associated with worlds, so it should be cached on
DOMWrapperWorld. Specifically, we want to remove
V8PerContextData::m_activityLogger and add DOMWrapperWorld::m_activityLogger.

Previously we couldn't do that for performance reasons
(DOMWrapperWorld::current(isolate)->activityLogger() was slow), but the
performance issue is now gone.

Would you mind making the change before adding more code about ActivityLogger?

+        V8DOMActivityLogger::activityLogger(m_world->worldId(),
+            m_frame->document() ? m_frame->document()->baseURI() : KURL()));
     if (!installDOMWindow()) {
         disposeContext(DoNotDetachGlobal);
         return false;
     }
 
     if (m_world->isMainWorld()) {
         updateDocument();
         if (m_frame->document()) {
             setSecurityToken(m_frame->document()->securityOrigin());
             ContentSecurityPolicy* csp = m_frame->document()->contentSecurityPolicy();
@@ skipping 260 matching lines @@
 
 void V8WindowShell::updateSecurityOrigin(SecurityOrigin* origin)
 {
     ASSERT(m_world->isMainWorld());
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);
 }
 
 } // WebCore