Added check to prevent extensions from injecting scrips into other extensions

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 74322094c70639a2a89e849e5ccc3056b1df41cb..5091bf685784c914038851fb0dae8d8a26fe7ee9 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -531,7 +531,8 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   //
   // This method is also aware of certain special pages that extensions are
   // usually not allowed to run script on.
-  bool CanExecuteScriptOnPage(const GURL& page_url,
+  bool CanExecuteScriptOnPage(const GURL& document_url,
+                              const GURL& top_document_url,
                               int tab_id,
                               const UserScript* script,
                               std::string* error) const;