Add an IPC method for Blink to call RapporService::RecordSample()

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index e1d18627a3c4f59c70463e7cb3f24add15c4cd68..b792df246f464bc83f2ea7ae1b21465b88163ad9 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -97,6 +97,7 @@
 #include "components/google/core/browser/google_util.h"
 #include "components/metrics/client_info.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "components/rappor/rappor_message_filter.h"
 #include "components/rappor/rappor_utils.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/translate/core/common/translate_switches.h"
@@ -836,6 +837,8 @@ void ChromeContentBrowserClient::RenderProcessWillLaunch(
       DataReductionProxyChromeSettingsFactory::GetForBrowserContext(profile);
   host->AddFilter(new data_reduction_proxy::DataReductionProxyMessageFilter(
       data_reduction_proxy_settings));
+  host->AddFilter(new rappor::RapporMessageFilter(
+      g_browser_process->rappor_service()));
 
   host->Send(new ChromeViewMsg_SetIsIncognitoProcess(
       profile->IsOffTheRecord()));