Track the original opener of a webcontents so we can rely on it for popups

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 a5e25357162ed23c75c10f613567c16cf8d84e25..041c883265f83169a4157774a9645367162bcda7 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -632,12 +632,23 @@ class WebContents : public PageNavigator,
   // to see what it should do.
   virtual bool FocusLocationBarByDefault() = 0;
 
-  // Does this have an opener associated with it?
+  // Does this have an opener (corresponding to window.opener in JavaScript)
+  // associated with it?
   virtual bool HasOpener() const = 0;
 
   // Returns the opener if HasOpener() is true, or nullptr otherwise.
   virtual WebContents* GetOpener() const = 0;
 
+  // Returns true if this WebContents was opened by another WebContents, even
+  // if the opener was suppressed. In contrast to HasOpener/GetOpener, the
+  // original opener doesn't reflect window.opener which can be suppressed or
+  // updated.
+  virtual bool HasOriginalOpener() const = 0;
+
+  // Returns the original opener if HasOriginalOpener() is true, or nullptr
+  // otherwise.
+  virtual WebContents* GetOriginalOpener() const = 0;
+
   typedef base::Callback<void(
       int, /* id */
       int, /* HTTP status code */