chrome: Add out-of-line copy ctors for complex classes.

chrome/renderer/media/cast_rtp_stream.h

Index: chrome/renderer/media/cast_rtp_stream.h
diff --git a/chrome/renderer/media/cast_rtp_stream.h b/chrome/renderer/media/cast_rtp_stream.h
index dd8c0c3b43d0b703a3f1874de14b454962de3ac5..994898ddf07c906593e329c038ed35ac72e51a99 100644
--- a/chrome/renderer/media/cast_rtp_stream.h
+++ b/chrome/renderer/media/cast_rtp_stream.h
@@ -86,6 +86,7 @@ struct CastRtpPayloadParams {
   std::vector<CastCodecSpecificParams> codec_specific_params;
 
   CastRtpPayloadParams();
+  CastRtpPayloadParams(const CastRtpPayloadParams& other);
   ~CastRtpPayloadParams();
 };
 
@@ -100,6 +101,7 @@ struct CastRtpParams {
   std::vector<std::string> rtcp_features;
 
   CastRtpParams();
+  CastRtpParams(const CastRtpParams& other);
   ~CastRtpParams();
 };