Re-add a thread check in Call::Call that was removed by mistake in a rebase.

BUG=

Review URL: https://codereview.webrtc.org/1434263002

Cr-Original-Commit-Position: refs/heads/master@{#10623}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 56a34df92807d95a2660765be10abef7c779666f
diff --git a/call/call.cc b/call/call.cc
index bdff1e7..34ecfc4 100644
--- a/call/call.cc
+++ b/call/call.cc
@@ -174,6 +174,7 @@
       received_audio_bytes_per_sec_(1000, 1),
       received_rtcp_bytes_per_sec_(1000, 1),
       first_rtp_packet_received_ms_(-1) {
+  RTC_DCHECK(configuration_thread_checker_.CalledOnValidThread());
   RTC_DCHECK_GE(config.bitrate_config.min_bitrate_bps, 0);
   RTC_DCHECK_GE(config.bitrate_config.start_bitrate_bps,
                 config.bitrate_config.min_bitrate_bps);
@@ -199,8 +200,8 @@
 }
 
 Call::~Call() {
-  UpdateHistograms();
   RTC_DCHECK(configuration_thread_checker_.CalledOnValidThread());
+  UpdateHistograms();
   RTC_CHECK(audio_send_ssrcs_.empty());
   RTC_CHECK(video_send_ssrcs_.empty());
   RTC_CHECK(video_send_streams_.empty());