Initialize BrowserPluginGuest to attach to the View hierarchy

content/public/browser/browser_plugin_guest_delegate.h

Index: content/public/browser/browser_plugin_guest_delegate.h
diff --git a/content/public/browser/browser_plugin_guest_delegate.h b/content/public/browser/browser_plugin_guest_delegate.h
index 8fa82c66cb8956bb94b04b0030e5bc345d37cc83..dd2621593d4650483fac8c1e5ee9a50c304c50d9 100644
--- a/content/public/browser/browser_plugin_guest_delegate.h
+++ b/content/public/browser/browser_plugin_guest_delegate.h
@@ -36,6 +36,12 @@ class CONTENT_EXPORT BrowserPluginGuestDelegate {
   virtual WebContents* CreateNewGuestWindow(
       const WebContents::CreateParams& create_params);
 
+  // Asks the delegate whether this guest can run while detached from a
+  // container. A detached guest is a WebContents that has no visual surface
+  // into which it can composite its content. Detached guests can be thought
+  // of as workers with a DOM.
+  virtual bool CanRunInDetachedState() const;
+
   // Notification that the embedder has completed attachment. The
   // |guest_proxy_routing_id| is the routing ID for the RenderView in the
   // embedder that will serve as a contentWindow proxy for the guest.
@@ -48,6 +54,9 @@ class CONTENT_EXPORT BrowserPluginGuestDelegate {
   virtual void ElementSizeChanged(const gfx::Size& old_size,
                                   const gfx::Size& new_size) {}
 
+  // Returns the WebContents that currently owns this guest.
+  virtual WebContents* GetOwnerWebContents() const;
+
   // Notifies that the content size of the guest has changed.
   // Note: In autosize mode, it si possible that the guest size may not match
   // the element size.