Allow MessageFilters to restrict listening to specific message classes

content/browser/geolocation/geolocation_dispatcher_host.cc

Index: content/browser/geolocation/geolocation_dispatcher_host.cc
diff --git a/content/browser/geolocation/geolocation_dispatcher_host.cc b/content/browser/geolocation/geolocation_dispatcher_host.cc
index e461e63464df619e0219e79c9dd8bb804c95b9c9..9b9ccad368ffda5f361744f2884343a05758fa0c 100644
--- a/content/browser/geolocation/geolocation_dispatcher_host.cc
+++ b/content/browser/geolocation/geolocation_dispatcher_host.cc
@@ -21,6 +21,10 @@
 namespace content {
 namespace {
 
+const uint32 kFilteredMessageClasses[] = {
+  GeolocationMsgStart,
+};
+
 void NotifyGeolocationProviderPermissionGranted() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   GeolocationProviderImpl::GetInstance()->UserDidOptIntoLocationServices();
@@ -295,8 +299,9 @@ GeolocationDispatcherHost* GeolocationDispatcherHost::New(
       geolocation_permission_context);
 }
 
-GeolocationDispatcherHost::GeolocationDispatcherHost() {
-}
+GeolocationDispatcherHost::GeolocationDispatcherHost()
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)) {}
 
 GeolocationDispatcherHost::~GeolocationDispatcherHost() {
 }