replace COMPILE_ASSERT with static_assert in content/

content/renderer/media/webrtc/media_stream_track_metrics.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/webrtc/media_stream_track_metrics.h"
 
 #include <inttypes.h>
 #include <set>
 #include <string>
 
@@ skipping 371 matching lines @@
                          pc_id,
                          track_id.c_str(),
                          stream_type == RECEIVED_STREAM ? 1 : 0);
 
   base::MD5Context ctx;
   base::MD5Init(&ctx);
   base::MD5Update(&ctx, unique_id_string);
   base::MD5Digest digest;
   base::MD5Final(&digest, &ctx);
 
-  COMPILE_ASSERT(sizeof(digest.a) > sizeof(uint64), NeedBiggerDigest);
+  static_assert(sizeof(digest.a) > sizeof(uint64), "need a bigger digest");
   return *reinterpret_cast<uint64*>(digest.a);
 }
 
 uint64 MediaStreamTrackMetrics::MakeUniqueId(const std::string& track_id,
                                              StreamType stream_type) {
   return MakeUniqueIdImpl(
       reinterpret_cast<uint64>(reinterpret_cast<void*>(this)),
       track_id,
       stream_type);
 }
 
 }  // namespace content