Allow MessageFilters to restrict listening to specific message classes

chrome/browser/prerender/prerender_message_filter.cc

Index: chrome/browser/prerender/prerender_message_filter.cc
diff --git a/chrome/browser/prerender/prerender_message_filter.cc b/chrome/browser/prerender/prerender_message_filter.cc
index 2379b5585eb4eb4d660328ea6b5d8c34c19df25e..5077e015b720a868bbe93e61669df3f2fe1c2a82 100644
--- a/chrome/browser/prerender/prerender_message_filter.cc
+++ b/chrome/browser/prerender/prerender_message_filter.cc
@@ -16,6 +16,10 @@ using content::BrowserThread;
 
 namespace {
 
+const uint32 kFilteredMessageClasses[] = {
+  PrerenderMsgStart
+};
+
 void OnChannelClosingInUIThread(Profile* profile, int render_process_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (!g_browser_process->profile_manager()->IsValidProfile(profile))
@@ -33,7 +37,9 @@ namespace prerender {
 
 PrerenderMessageFilter::PrerenderMessageFilter(int render_process_id,
                                                Profile* profile)
-    : render_process_id_(render_process_id),
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)),
+      render_process_id_(render_process_id),
       profile_(profile) {
 }