Revert 226264 "Be able to build cast_unittest and related target..."

trunk/src/media/cast/rtcp/test_rtcp_packet_builder.cc

Index: trunk/src/media/cast/rtcp/test_rtcp_packet_builder.cc
===================================================================
--- trunk/src/media/cast/rtcp/test_rtcp_packet_builder.cc	(revision 226266)
+++ trunk/src/media/cast/rtcp/test_rtcp_packet_builder.cc	(working copy)
@@ -45,8 +45,7 @@
   AddRtcpHeader(202, 1);
   big_endian_writer_.WriteU32(sender_ssrc);
   big_endian_writer_.WriteU8(1);  // c_name.
-  big_endian_writer_.WriteU8(
-      static_cast<uint8>(c_name.size()));  // c_name length in bytes.
+  big_endian_writer_.WriteU8(c_name.size());  // c_name length in bytes.
   for (size_t i = 0; i < c_name.size(); ++i) {
     big_endian_writer_.WriteU8(c_name.c_str()[i]);
   }