Allow MessageFilters to restrict listening to specific message classes

chrome/browser/chrome_net_benchmarking_message_filter.cc

Index: chrome/browser/chrome_net_benchmarking_message_filter.cc
diff --git a/chrome/browser/chrome_net_benchmarking_message_filter.cc b/chrome/browser/chrome_net_benchmarking_message_filter.cc
index a287a041be2fb019b6f8fbf5a5e4021daf319d0d..695de5a8a5eb9a74dfd4812157f6f507ba6c8d9f 100644
--- a/chrome/browser/chrome_net_benchmarking_message_filter.cc
+++ b/chrome/browser/chrome_net_benchmarking_message_filter.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/net/predictor.h"
@@ -23,6 +24,10 @@
 
 namespace {
 
+const uint32 kFilteredMessageClasses[] = {
+  ChromeBenchmarkingMsgStart,
+};
+
 void ClearCacheCallback(ChromeNetBenchmarkingMessageFilter* filter,
                         IPC::Message* reply_msg,
                         int result) {
@@ -35,7 +40,9 @@ void ClearCacheCallback(ChromeNetBenchmarkingMessageFilter* filter,
 ChromeNetBenchmarkingMessageFilter::ChromeNetBenchmarkingMessageFilter(
     Profile* profile,
     net::URLRequestContextGetter* request_context)
-    : profile_(profile),
+    : BrowserMessageFilter(
+          kFilteredMessageClasses, arraysize(kFilteredMessageClasses)),
+      profile_(profile),
       request_context_(request_context) {
 }