Allow MessageFilters to restrict listening to specific message classes

content/shell/browser/shell_message_filter.cc

Index: content/shell/browser/shell_message_filter.cc
diff --git a/content/shell/browser/shell_message_filter.cc b/content/shell/browser/shell_message_filter.cc
index fcbde2f80a9aac69455248b7191adbc42265d0af..dfb23cf78c3bf36c7191bb733ac7d46f1025c49c 100644
--- a/content/shell/browser/shell_message_filter.cc
+++ b/content/shell/browser/shell_message_filter.cc
@@ -20,13 +20,20 @@
 #include "webkit/browser/quota/quota_manager.h"
 
 namespace content {
+namespace {
+const uint32 kFilteredMessageClasses[] = {
+  ShellMsgStart,
+};
+}  // namespace
 
 ShellMessageFilter::ShellMessageFilter(
     int render_process_id,
     webkit_database::DatabaseTracker* database_tracker,
     quota::QuotaManager* quota_manager,
     net::URLRequestContextGetter* request_context_getter)
-    : render_process_id_(render_process_id),
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)),
+      render_process_id_(render_process_id),
       database_tracker_(database_tracker),
       quota_manager_(quota_manager),
       request_context_getter_(request_context_getter) {