Adjust LocalStorage commit rate limiting.

content/browser/dom_storage/dom_storage_namespace.cc

Index: content/browser/dom_storage/dom_storage_namespace.cc
diff --git a/content/browser/dom_storage/dom_storage_namespace.cc b/content/browser/dom_storage/dom_storage_namespace.cc
index f554ac58814260442a14cdf3bd90b140ba786511..b4c9fc5243f2a7db299745e230b7b21301d8a4f1 100644
--- a/content/browser/dom_storage/dom_storage_namespace.cc
+++ b/content/browser/dom_storage/dom_storage_namespace.cc
@@ -59,7 +59,8 @@ void DOMStorageNamespace::CloseStorageArea(DOMStorageArea* area) {
   AreaHolder* holder = GetAreaHolder(area->origin());
   DCHECK(holder);
   DCHECK_EQ(holder->area_.get(), area);
-  --(holder->open_count_);
+  if (!--(holder->open_count_) && holder->area_->HasUncommittedChanges())
+    holder->area_->ScheduleImmediateCommit();
   // TODO(michaeln): Clean up areas that aren't needed in memory anymore.
   // The in-process-webkit based impl didn't do this either, but would be nice.
 }