Updates to video config to allow changes in google3 tests, in order to not break anything.

Bug: webrtc:8630
Change-Id: I71bfd3f01344c80a83b728385b9231b47ee1fd5d
Reviewed-on: https://webrtc-review.googlesource.com/32460
Commit-Queue: Seth Hampson <shampson@webrtc.org>
Reviewed-by: Elad Alon <eladalon@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Peter Thatcher <pthatcher@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21373}
diff --git a/api/rtpparameters.cc b/api/rtpparameters.cc
index 160a069..79fd3a9 100644
--- a/api/rtpparameters.cc
+++ b/api/rtpparameters.cc
@@ -17,6 +17,8 @@
 
 namespace webrtc {
 
+const double kDefaultBitratePriority = 1.0;
+
 RtcpFeedback::RtcpFeedback() {}
 RtcpFeedback::RtcpFeedback(RtcpFeedbackType type) : type(type) {}
 RtcpFeedback::RtcpFeedback(RtcpFeedbackType type,
diff --git a/api/rtpparameters.h b/api/rtpparameters.h
index e6bd25e..221f5b6 100644
--- a/api/rtpparameters.h
+++ b/api/rtpparameters.h
@@ -72,6 +72,7 @@
   BALANCED,
 };
 
+extern const double kDefaultBitratePriority;
 enum class PriorityType { VERY_LOW, LOW, MEDIUM, HIGH };
 
 struct RtcpFeedback {