Set min BWE bitrate form 10kbps to 5kbps and centralize minimum bitrate.

webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h

Index: webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h
diff --git a/webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h b/webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h
index fc2278e8419d4974aebd2369143ee30c4c473972..627a96b86cac57781846dbeea80f0801668efce5 100644
--- a/webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h
+++ b/webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h
@@ -19,6 +19,10 @@
 
 namespace webrtc {
 
+namespace remote_bitrate_estimator_defines {
+constexpr int kMinBitrateBps = 5000;

[stefan-webrtc, 2016/10/17 18:05:04]

The description doesn't say that this CL changes the min bitrate from 10k / 30k
to 5k. That should be made clear, as I'd say that is the most important part of
the CL.

[michaelt, 2016/10/25 09:40:56]

Done.

+}  // remote_bitrate_estimator_defines
+
 static const int64_t kBitrateWindowMs = 1000;
 
 extern const char* kBweTypeHistogram;