media/cast/sender: Rename deadline_utilization to encoder_utilization.

media/cast/sender/sender_encoded_frame.cc

Index: media/cast/sender/sender_encoded_frame.cc
diff --git a/media/cast/sender/sender_encoded_frame.cc b/media/cast/sender/sender_encoded_frame.cc
index 3391bcc20873782a38279c578b99476c7cde1831..611a745f6233c8bb5a4f64fe8d5e32c150b83477 100644
--- a/media/cast/sender/sender_encoded_frame.cc
+++ b/media/cast/sender/sender_encoded_frame.cc
@@ -8,9 +8,7 @@ namespace media {
 namespace cast {
 
 SenderEncodedFrame::SenderEncodedFrame()
-    : EncodedFrame(),
-      deadline_utilization(-1.0),
-      lossy_utilization(-1.0) {}
+    : EncodedFrame(), encoder_utilization(-1.0), lossy_utilization(-1.0) {}
 
 SenderEncodedFrame::~SenderEncodedFrame() {}