Allow MessageFilters to restrict listening to specific message classes

content/browser/geolocation/geolocation_dispatcher_host.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/geolocation/geolocation_dispatcher_host.h"
 
 #include <map>
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "content/browser/geolocation/geolocation_provider_impl.h"
 #include "content/browser/renderer_host/render_message_filter.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/public/browser/geolocation_permission_context.h"
 #include "content/public/common/geoposition.h"
 #include "content/common/geolocation_messages.h"
 
 namespace content {
 namespace {
 
+const uint32 kFilteredMessageClasses[] = {
+  GeolocationMsgStart,
+};
+
 void NotifyGeolocationProviderPermissionGranted() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   GeolocationProviderImpl::GetInstance()->UserDidOptIntoLocationServices();
 }
 
 void SendGeolocationPermissionResponse(int render_process_id,
                                        int render_view_id,
                                        int bridge_id,
                                        bool allowed) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 254 matching lines @@
 
 // static
 GeolocationDispatcherHost* GeolocationDispatcherHost::New(
     int render_process_id,
     GeolocationPermissionContext* geolocation_permission_context) {
   return new GeolocationDispatcherHostImpl(
       render_process_id,
       geolocation_permission_context);
 }
 
-GeolocationDispatcherHost::GeolocationDispatcherHost() {
-}
+GeolocationDispatcherHost::GeolocationDispatcherHost()
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)) {}
 
 GeolocationDispatcherHost::~GeolocationDispatcherHost() {
 }
 
 }  // namespace content