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

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 0cb8a0e3cbb8c5e4e1b1e5f00e24c73615c28098..bbd43b578cfa0916a924f0d163da50f9c92f5cad 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -65,6 +65,7 @@
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 #include "components/pdf/renderer/ppb_pdf_impl.h"
 #include "components/plugins/renderer/mobile_youtube_plugin.h"
+#include "components/rappor/rappor_messages.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "components/web_cache/renderer/web_cache_render_process_observer.h"
@@ -1480,6 +1481,11 @@ bool ChromeContentRendererClient::WasWebRequestUsedBySomeExtensions() {
 #endif
 }
 
+void ChromeContentRendererClient::RecordRappor(
+    const std::string& metric, const std::string& sample) {
+  RenderThread::Get()->Send(new RapporHostMsg_RecordSample(metric, sample));
+}
+
 const void* ChromeContentRendererClient::CreatePPAPIInterface(
     const std::string& interface_name) {
 #if defined(ENABLE_PLUGINS)