Renamed rtc::RateLimiter to rtrc::DataRateLimiter.

This removes a confusing name collision between webrtc::RateLimiter
and rtc::RateLimiter where the header file names were separated only by
an underscore.

Bug: None
Change-Id: Ifcf0a4e62b2bf3bd9057714d7c536f7609ad1b79
Reviewed-on: https://webrtc-review.googlesource.com/58741
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22237}
diff --git a/media/base/rtpdataengine.h b/media/base/rtpdataengine.h
index 64e083b..52d4325 100644
--- a/media/base/rtpdataengine.h
+++ b/media/base/rtpdataengine.h
@@ -20,6 +20,10 @@
 #include "media/base/mediaconstants.h"
 #include "media/base/mediaengine.h"
 
+namespace rtc {
+class DataRateLimiter;
+}
+
 namespace cricket {
 
 struct DataCodec;
@@ -103,7 +107,7 @@
   std::vector<StreamParams> send_streams_;
   std::vector<StreamParams> recv_streams_;
   std::map<uint32_t, RtpClock*> rtp_clock_by_send_ssrc_;
-  std::unique_ptr<rtc::RateLimiter> send_limiter_;
+  std::unique_ptr<rtc::DataRateLimiter> send_limiter_;
 };
 
 }  // namespace cricket