Unbreak tabs.onRemove extension API in face of fast tab closure

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
index dbac697f8ea3bfc2ceac1cbe260b63d0011d52c8..4cded967cf1ce193676afb6c2445743ed2c408ea 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -383,6 +383,9 @@ class WebContents : public PageNavigator,
   // after all the beforeunload dialogs have finished.
   virtual void OnUnloadStarted() = 0;
 
+  // Called just before making the tab invisible on close.
+  virtual void OnUnloadAboutToDetach() = 0;
+
   // Set the time during close when the tab is no longer visible.
   virtual void OnUnloadDetachedStarted() = 0;

[Avi (use Gerrit), 2013/06/18 15:04:13]

:( :(

 
@@ -402,6 +405,10 @@ class WebContents : public PageNavigator,
   virtual void SetClosedByUserGesture(bool value) = 0;
   virtual bool GetClosedByUserGesture() const = 0;
 
+  // True if view is in the process of being detached from it's containing tab
+  // as part of tab closure.
+  virtual bool GetWebContentsDetachedToClose() const = 0;
+
   // Gets the zoom level for this tab.
   virtual double GetZoomLevel() const = 0;