[proof-of-concept] SW thread independent of the main thread

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index aad3a30c3e4ffb0e12aa8b4ba1a768727f7e3326..51e0f354a5ab4ba24675f3cc7ee09644688f5969 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -79,6 +79,7 @@ class StoragePartitionImpl;
 
 namespace mojom {
 class StoragePartitionService;
+class IsolatedWorkerDispatcher;
 }
 
 typedef base::Thread* (*RendererMainThreadFactoryFunction)(
@@ -286,6 +287,13 @@ class CONTENT_EXPORT RenderProcessHostImpl
 
   void RecomputeAndUpdateWebKitPreferences();
 
+  void SetIsolatedWorkerDispatcher(
+      mojo::InterfacePtr<mojom::IsolatedWorkerDispatcher>);
+
+  void GetIsolatedWorkerDispatcher(
+      const base::Callback<
+          void(mojo::InterfacePtr<mojom::IsolatedWorkerDispatcher>*)>&);
+
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread.
   std::unique_ptr<IPC::ChannelProxy> channel_;
@@ -573,6 +581,13 @@ class CONTENT_EXPORT RenderProcessHostImpl
   std::unique_ptr<base::WeakPtrFactory<RenderProcessHostImpl>>
       instance_weak_factory_;
 
+  std::unique_ptr<mojo::InterfacePtr<mojom::IsolatedWorkerDispatcher>>
+      isolated_worker_dispatcher_;
+
+  std::vector<base::Callback<void(
+      mojo::InterfacePtr<mojom::IsolatedWorkerDispatcher>*)>>
+      isolated_worker_dispatcher_callbacks_;
+
   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);