Implement an infrastructure of Blink-in-JS

Source/bindings/v8/DOMWrapperWorld.h

 /*
  * 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 33 matching lines @@
 
 class DOMDataStore;
 class ExecutionContext;
 class ScriptController;
 
 enum WorldIdConstants {
     MainWorldId = 0,
     // Embedder isolated worlds can use IDs in [1, 1<<29).
     EmbedderWorldIdLimit = (1 << 29),
     ScriptPreprocessorIsolatedWorldId,
+    BlinkInJSIsolatedWorldId,

[abarth-chromium, 2014/06/20 15:17:43]

PrivateScriptWorldId ?

     IsolatedWorldIdLimit,
     WorkerWorldId,
     TestingWorldId,
 };
 
 // This class represent a collection of DOM wrappers for a specific world.
 class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> {
 public:
     static PassRefPtr<DOMWrapperWorld> create(int worldId = -1, int extensionGroup = -1);
 
     static const int mainWorldExtensionGroup = 0;
+    static const int blinkInJSIsolatedWorldExtensionGroup = 1;
     static PassRefPtr<DOMWrapperWorld> ensureIsolatedWorld(int worldId, int extensionGroup);
     ~DOMWrapperWorld();
     void dispose();
 
     static bool isolatedWorldsExist() { return isolatedWorldCount; }
     static void allWorldsInMainThread(Vector<RefPtr<DOMWrapperWorld> >& worlds);
 
     static DOMWrapperWorld& world(v8::Handle<v8::Context> context)
     {
         return ScriptState::from(context)->world();
     }
 
     static DOMWrapperWorld& current(v8::Isolate* isolate)
     {
         if (isMainThread() && worldOfInitializingWindow) {
             // It's possible that current() is being called while window is being initialized.
             // In order to make current() workable during the initialization phase,
             // we cache the world of the initializing window on worldOfInitializingWindow.
             // If there is no initiazing window, worldOfInitializingWindow is 0.
             return *worldOfInitializingWindow;
         }
         return world(isolate->GetCurrentContext());
     }
 
     static DOMWrapperWorld& mainWorld();
+    static DOMWrapperWorld& blinkInJSWorld();
 
     // Associates an isolated world (see above for description) with a security
     // origin. XMLHttpRequest instances used in that world will be considered
     // to come from that origin, not the frame's.
     static void setIsolatedWorldSecurityOrigin(int worldId, PassRefPtr<SecurityOrigin>);
     SecurityOrigin* isolatedWorldSecurityOrigin();
 
     // Associated an isolated world with a Content Security Policy. Resources
     // embedded into the main world's DOM from script executed in an isolated
     // world should be restricted based on the isolated world's DOM, not the
     // main world's.
     //
     // FIXME: Right now, resource injection simply bypasses the main world's
     // DOM. More work is necessary to allow the isolated world's policy to be
     // applied correctly.
     static void setIsolatedWorldContentSecurityPolicy(int worldId, const String& policy);
     bool isolatedWorldHasContentSecurityPolicy();
 
     bool isMainWorld() const { return m_worldId == MainWorldId; }
+    bool isBlinkInJSIsolatedWorld() const { return m_worldId == BlinkInJSIsolatedWorldId; }
     bool isWorkerWorld() const { return m_worldId == WorkerWorldId; }
     bool isIsolatedWorld() const { return MainWorldId < m_worldId  && m_worldId < IsolatedWorldIdLimit; }
 
     int worldId() const { return m_worldId; }
     int extensionGroup() const { return m_extensionGroup; }
     DOMDataStore& domDataStore() const { return *m_domDataStore; }
 
     static void setWorldOfInitializingWindow(DOMWrapperWorld* world)
     {
         ASSERT(isMainThread());
         worldOfInitializingWindow = world;
     }
     // FIXME: Remove this method once we fix crbug.com/345014.
     static bool windowIsBeingInitialized() { return !!worldOfInitializingWindow; }
 
 private:
     DOMWrapperWorld(int worldId, int extensionGroup);
 
     static unsigned isolatedWorldCount;
     static DOMWrapperWorld* worldOfInitializingWindow;
 
     const int m_worldId;
     const int m_extensionGroup;
     OwnPtr<DOMDataStore> m_domDataStore;
 };
 
 } // namespace WebCore
 
 #endif // DOMWrapperWorld_h