DevTools: show extension name in console context switcher

Source/core/inspector/PageRuntimeAgent.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:
  *
  *     * 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 163 matching lines @@
         for (size_t i = 0; i< isolatedContexts.size(); i++)
             notifyContextCreated(frameId, isolatedContexts[i].first, isolatedContexts[i].second, false);
         isolatedContexts.clear();
     }
 }
 
 void PageRuntimeAgent::notifyContextCreated(const String& frameId, ScriptState* scriptState, SecurityOrigin* securityOrigin, bool isPageContext)
 {
     ASSERT(securityOrigin || isPageContext);
     int executionContextId = injectedScriptManager()->injectedScriptIdFor(scriptState);
-    String name = securityOrigin ? securityOrigin->toRawString() : "";
+    v8::HandleScope handleScope;

[yurys, 2013/05/24 04:58:44]

We try to avoid using v8 API from the agents directly. There are Script*
abstractions for accessing underlying VM.

+    DOMWrapperWorld* world = DOMWrapperWorld::isolatedWorld(scriptState->context());
+    String name = world ? world->isolatedWorldHumanReadableName() : "";
+    if (name.isEmpty() && securityOrigin)
+        name = securityOrigin->toRawString();
+
     m_frontend->executionContextCreated(ExecutionContextDescription::create()
         .setId(executionContextId)
         .setIsPageContext(isPageContext)
         .setName(name)
         .setFrameId(frameId)
         .release());
 }
 
 } // namespace WebCore