Register a Service Worker when an extension is enabled.

extensions/browser/extension_host.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_EXTENSION_HOST_H_
 #define EXTENSIONS_BROWSER_EXTENSION_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 29 matching lines @@
 //
 // If you are adding code that only affects visible extension views (and not
 // invisible background pages) you should add it to ExtensionViewHost.
 class ExtensionHost : public content::WebContentsDelegate,
                       public content::WebContentsObserver,
                       public ExtensionFunctionDispatcher::Delegate,
                       public content::NotificationObserver {
  public:
   class ProcessCreationQueue;
 
   ExtensionHost(const Extension* extension,

[scheib, 2014/04/24 22:11:39]

Planning to keep the use of ExtensionHost for service worker backed extensions,
and having ExtensionHost abstract the details of being RenderView or
ServiceWorker backed?

                 content::SiteInstance* site_instance,
                 const GURL& url, ViewType host_type);
   virtual ~ExtensionHost();
 
   const Extension* extension() const { return extension_; }
   const std::string& extension_id() const { return extension_id_; }
   content::WebContents* host_contents() const { return host_contents_.get(); }
   content::RenderViewHost* render_view_host() const;

[scheib, 2014/04/24 22:11:39]

Extension with a ServiceWorker won't have a RenderViewHost to return here,
right? It would be appropriate to have something like ServiceWorkerHost*?

   content::RenderProcessHost* render_process_host() const;
   bool did_stop_loading() const { return did_stop_loading_; }
   bool document_element_available() const {
     return document_element_available_;
   }
 
   content::BrowserContext* browser_context() { return browser_context_; }
 
   ViewType extension_host_type() const { return extension_host_type_; }
   const GURL& GetURL() const;
 
   // Returns true if the render view is initialized and didn't crash.
   bool IsRenderViewLive() const;
 
   // Prepares to initializes our RenderViewHost by creating its RenderView and
   // navigating to this host's url. Uses host_view for the RenderViewHost's view
   // (can be NULL). This happens delayed to avoid locking the UI.
-  void CreateRenderViewSoon();
+  void CreateRenderViewSoon(const base::Closure& continuation);
 
   // content::WebContentsObserver
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void RenderViewCreated(
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void RenderViewDeleted(
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void RenderViewReady() OVERRIDE;
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
   virtual void DocumentAvailableInMainFrame() OVERRIDE;
@@ skipping 83 matching lines @@
   content::NotificationRegistrar registrar_;
 
   ExtensionFunctionDispatcher extension_function_dispatcher_;
 
   // The type of view being hosted.
   ViewType extension_host_type_;
 
   // Used to measure how long it's been since the host was created.
   base::ElapsedTimer since_created_;
 
+  // Called when the RenderView is created.
+  std::vector<base::Closure> when_render_view_created_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionHost);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_HOST_H_