Fix for 'Simple Adblock' extension crashes

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 11535905d46e955cfe87209b96b1a45deff5e86e..1df288a3b8809c23c804c7260e833cecb33d8b94 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1659,6 +1659,10 @@ SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
   return controller_.GetSessionStorageNamespace(instance);
 }
 
+SessionStorageNamespaceMap WebContentsImpl::GetSessionStorageNamespaceMap() {
+  return controller_.GetSessionStorageNamespaceMap();
+}
+
 FrameTree* WebContentsImpl::GetFrameTree() {
   return &frame_tree_;
 }