Removes the references to shared workers from the all documents in being deleted frames

content/browser/shared_worker/worker_document_set.cc

Index: content/browser/shared_worker/worker_document_set.cc
diff --git a/content/browser/shared_worker/worker_document_set.cc b/content/browser/shared_worker/worker_document_set.cc
index f8981adbc2b735b416df263c1b6c4fbdcb1efeeb..fda6b4c33868a0c38d67de597f78fba644795caf 100644
--- a/content/browser/shared_worker/worker_document_set.cc
+++ b/content/browser/shared_worker/worker_document_set.cc
@@ -64,6 +64,23 @@ void WorkerDocumentSet::RemoveAll(BrowserMessageFilter* parent) {
   }
 }
 
+void WorkerDocumentSet::RemoveRenderFrame(int render_process_id,
+                                          int render_frame_id) {
+  for (DocumentInfoSet::iterator i = document_set_.begin();
+       i != document_set_.end();) {
+    // Note this idiom is somewhat tricky - calling document_set_.erase(iter)
+    // invalidates any iterators that point to the element being removed, so
+    // bump the iterator beyond the item being removed before calling erase.
+    if (i->render_process_id() == render_process_id &&
+        i->render_frame_id() == render_frame_id) {
+      DocumentInfoSet::iterator item_to_delete = i++;
+      document_set_.erase(item_to_delete);
+    } else {
+      ++i;
+    }
+  }
+}
+
 WorkerDocumentSet::DocumentInfo::DocumentInfo(
     BrowserMessageFilter* filter, unsigned long long document_id,
     int render_process_id, int render_frame_id)