Adding "target_frame_rate" variable in lieu of "max_frame_rate" for FrameReceiverConfig

media/cast/cast_config.h

Index: media/cast/cast_config.h
diff --git a/media/cast/cast_config.h b/media/cast/cast_config.h
index 868a14949f80fed9f34621186415350627544cc5..446b1e02e2c5a73c16f48522be829b8ee589d2a7 100644
--- a/media/cast/cast_config.h
+++ b/media/cast/cast_config.h
@@ -145,7 +145,7 @@ struct FrameReceiverConfig {
   // The target frame rate.  For audio, this is normally 100 (i.e., frames have
   // a duration of 10ms each).  For video, this is normally 30, but any frame
   // rate is supported.
-  int max_frame_rate;  // TODO(miu): Rename to target_frame_rate.
+  int target_frame_rate;
 
   // Codec used for the compression of signal data.
   // TODO(miu): Merge the AudioCodec and VideoCodec enums into one so this union