base: Remove the string logging from CHECK().

media/cast/sender/vp8_encoder.cc

Index: media/cast/sender/vp8_encoder.cc
diff --git a/media/cast/sender/vp8_encoder.cc b/media/cast/sender/vp8_encoder.cc
index 39c8971e0de999faa9054b410193e8101206cbb0..47e69de86dad70e52aba772c2d842ce1a95fc7b8 100644
--- a/media/cast/sender/vp8_encoder.cc
+++ b/media/cast/sender/vp8_encoder.cc
@@ -255,12 +255,12 @@ void Vp8Encoder::Encode(const scoped_refptr<media::VideoFrame>& video_frame,
   // zero to force the encoder to base its single-frame bandwidth calculations
   // entirely on |predicted_frame_duration| and the target bitrate setting being
   // micro-managed via calls to UpdateRates().
+  // If the check fails, invalid arguments were passed to vpx_codec_encode().
   CHECK_EQ(vpx_codec_encode(&encoder_, &vpx_image, 0,
                             predicted_frame_duration.InMicroseconds(),
                             key_frame_requested_ ? VPX_EFLAG_FORCE_KF : 0,
                             VPX_DL_REALTIME),
-           VPX_CODEC_OK)
-      << "BUG: Invalid arguments passed to vpx_codec_encode().";
+           VPX_CODEC_OK);
 
   // Pull data from the encoder, populating a new EncodedFrame.
   encoded_frame->frame_id = next_frame_id_++;