Convert RapporRecorder to use mojo.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 3392e33def03484438f07e84b62a16de415f65a1..5f185806ee56708ce4d1d2576cc49caffa3ba5d2 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -637,13 +637,3 @@ IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_RequestShowAppBanner,
 // Sent by the renderer to indicate that a fields trial has been activated.
 IPC_MESSAGE_CONTROL1(ChromeViewHostMsg_FieldTrialActivated,
                      std::string /* name */)
-
-// Record a sample string to a Rappor metric.
-IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_RecordRappor,
-                     std::string /* metric */,
-                     std::string /* sample */)
-
-// Record a domain and registry of a url to a Rappor metric.
-IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_RecordRapporURL,
-                     std::string /* metric */,
-                     GURL /* sample url */)