Allow MessageFilters to restrict listening to specific message classes

content/browser/indexed_db/indexed_db_dispatcher_host.cc

Index: content/browser/indexed_db/indexed_db_dispatcher_host.cc
diff --git a/content/browser/indexed_db/indexed_db_dispatcher_host.cc b/content/browser/indexed_db/indexed_db_dispatcher_host.cc
index ffa628c401669cd85a1d4934d867a9e4992be4d4..7adeab31510dc60c6de09f308e56f0b53b22917c 100644
--- a/content/browser/indexed_db/indexed_db_dispatcher_host.cc
+++ b/content/browser/indexed_db/indexed_db_dispatcher_host.cc
@@ -30,10 +30,17 @@ using webkit_database::DatabaseUtil;
 using blink::WebIDBKey;
 
 namespace content {
+namespace {
+const uint32 kFilteredMessageClasses[] = {
+  IndexedDBMsgStart,
+};
+}  // namespace
 
 IndexedDBDispatcherHost::IndexedDBDispatcherHost(
     IndexedDBContextImpl* indexed_db_context)
-    : indexed_db_context_(indexed_db_context),
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)),
+      indexed_db_context_(indexed_db_context),
       database_dispatcher_host_(new DatabaseDispatcherHost(this)),
       cursor_dispatcher_host_(new CursorDispatcherHost(this)) {
   DCHECK(indexed_db_context_);