Consider the origin when computing extension permissions

chrome/renderer/extensions/chrome_v8_extension.cc

Index: chrome/renderer/extensions/chrome_v8_extension.cc
===================================================================
--- chrome/renderer/extensions/chrome_v8_extension.cc	(revision 111763)
+++ chrome/renderer/extensions/chrome_v8_extension.cc	(working copy)
@@ -20,6 +20,7 @@
 #include "ui/base/resource/resource_bundle.h"
 
 using extensions::ExtensionAPI;
+using WebKit::WebDocument;
 using WebKit::WebFrame;
 using WebKit::WebView;
 
@@ -109,12 +110,13 @@
   if (!renderview)
     return NULL;  // this can happen as a tab is closing.
 
-  GURL url = renderview->GetWebView()->mainFrame()->document().url();
+  WebDocument document = renderview->GetWebView()->mainFrame()->document();
+  GURL url = document.url();
   const ExtensionSet* extensions = extension_dispatcher_->extensions();
-  if (!extensions->ExtensionBindingsAllowed(url))
+  if (!extensions->ExtensionBindingsAllowed(document.securityOrigin(), url))
     return NULL;
 
-  return extensions->GetByURL(url);
+  return extensions->GetByURL(document.securityOrigin(), url);
 }
 
 bool ChromeV8Extension::CheckCurrentContextAccessToExtensionAPI(