Allow MessageFilters to restrict listening to specific message classes

content/browser/frame_host/render_frame_message_filter.cc

Index: content/browser/frame_host/render_frame_message_filter.cc
diff --git a/content/browser/frame_host/render_frame_message_filter.cc b/content/browser/frame_host/render_frame_message_filter.cc
index c1876806fae6e7ed4f56762df05b92c69c6a5c5e..05472e1eb7bdaf5b3d0be62ae2a4ac8fbed3f6bb 100644
--- a/content/browser/frame_host/render_frame_message_filter.cc
+++ b/content/browser/frame_host/render_frame_message_filter.cc
@@ -13,6 +13,10 @@ namespace content {
 
 namespace {
 
+const uint32 kFilteredMessageClasses[] = {
+  FrameMsgStart,
+};
+
 void CreateChildFrameOnUI(int process_id,
                           int parent_render_frame_id,
                           int64 parent_frame_id,
@@ -36,7 +40,9 @@ void CreateChildFrameOnUI(int process_id,
 RenderFrameMessageFilter::RenderFrameMessageFilter(
     int render_process_id,
     RenderWidgetHelper* render_widget_helper)
-    : render_process_id_(render_process_id),
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)),
+      render_process_id_(render_process_id),
       render_widget_helper_(render_widget_helper) {
 }