message: Fix two -Wunreachable-code-aggressive warnings on Fuchsia
  Cr-Commit-Position: refs/heads/master@{#34816}
diff: @@ -38,6 +38,10 @@ const int64_t kNanosecsPerFiletime = 100;
  namespace rtc {
  int64_t GetProcessCpuTimeNanos() {
  +#if defined(WEBRTC_FUCHSIA)
  + RTC_LOG_ERR(LS_ERROR) << "GetProcessCpuTimeNanos() not implemented";
  + return 0;
  +#else
  #if defined(WEBRTC_LINUX)
  struct timespec ts;
  if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
  @@ -66,18 +70,20 @@ int64_t GetProcessCpuTimeNanos() {
  } else {
  RTC_LOG_ERR(LS_ERROR) << "GetProcessTimes() failed.";
  }
  -#elif defined(WEBRTC_FUCHSIA)
  - RTC_LOG_ERR(LS_ERROR) << "GetProcessCpuTimeNanos() not implemented";
  - return 0;
  #else
  // Not implemented yet.
  static_assert(
  false, "GetProcessCpuTimeNanos() platform support not yet implemented.");
  #endif
  return -1;
  +#endif // defined(WEBRTC_FUCHSIA)
  }
  int64_t GetThreadCpuTimeNanos() {
  +#if defined(WEBRTC_FUCHSIA)
  + RTC_LOG_ERR(LS_ERROR) << "GetThreadCpuTimeNanos() not implemented";
  + return 0;
  +#else
  #if defined(WEBRTC_LINUX)
  struct timespec ts;
  if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts) == 0) {
  @@ -111,15 +117,13 @@ int64_t GetThreadCpuTimeNanos() {
  } else {
  RTC_LOG_ERR(LS_ERROR) << "GetThreadTimes() failed.";
  }
  -#elif defined(WEBRTC_FUCHSIA)
  - RTC_LOG_ERR(LS_ERROR) << "GetThreadCpuTimeNanos() not implemented";
  - return 0;
  #else
  // Not implemented yet.
  static_assert(
  false, "GetThreadCpuTimeNanos() platform support not yet implemented.");
  #endif
  return -1;
  +#endif // defined(WEBRTC_FUCHSIA)
  }
  } // namespace rtc
  