Try to restore window.opener when opening blocked 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 b7f67e46eaef8e423c4d24d3ff9753bdd5ed2de1..2dc081e3ccd483c0d1c5e01a51e6cfbce20129df 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -56,7 +56,7 @@ struct RendererPreferences;
 // Instantiating one is simple:
 //   scoped_ptr<content::WebContents> web_contents(
 //       content::WebContents::Create(
-//           content::WebContents::CreateParams(browser_context)));
+//           content::WebContents::CreateParams(browser_context), NULL));
 //   gfx::NativeView view = web_contents->GetView()->GetNativeView();
 //   // |view| is an HWND, NSView*, GtkWidget*, etc.; insert it into the view
 //   // hierarchy wherever it needs to go.
@@ -91,8 +91,10 @@ class WebContents : public PageNavigator,
     gfx::NativeView context;
   };
 
-  // Creates a new WebContents.
-  CONTENT_EXPORT static WebContents* Create(const CreateParams& params);
+  // Creates a new WebContents. If |opener| is non-NULL, it will be set as the
+  // WebContent's opener.
+  CONTENT_EXPORT static WebContents* Create(const CreateParams& params,
+                                            WebContents* opener = NULL);

[awong, 2013/07/31 20:21:42]

default args aren't allowed by style guide.  Maybe add a CreateWithOpener()

[jochen (gone - plz use gerrit), 2013/07/31 20:23:44]

The default arg is just there to make it possible to find the actual code to
review. I'll remove the default parameter if you like the actual code.

 
   // Similar to Create() above but should be used when you need to prepopulate
   // the SessionStorageNamespaceMap of the WebContents. This can happen if