Add RTC_ prefix to (D)CHECKs and related macros.

webrtc/video/call_perf_tests.cc

Index: webrtc/video/call_perf_tests.cc
diff --git a/webrtc/video/call_perf_tests.cc b/webrtc/video/call_perf_tests.cc
index a301452c951306fdd7394d0d74986f489e5e17d9..bbf4caaebd7ff8736955ff29368f9256bdfc1734 100644
--- a/webrtc/video/call_perf_tests.cc
+++ b/webrtc/video/call_perf_tests.cc
@@ -548,7 +548,7 @@ void CallPerfTest::TestMinTransmitBitrate(bool pad_to_min_bitrate) {
                                  const PacketTime& packet_time) override {
       VideoSendStream::Stats stats = send_stream_->GetStats();
       if (stats.substreams.size() > 0) {
-        DCHECK_EQ(1u, stats.substreams.size());
+        RTC_DCHECK_EQ(1u, stats.substreams.size());
         int bitrate_kbps =
             stats.substreams.begin()->second.total_bitrate_bps / 1000;
         if (bitrate_kbps > 0) {
@@ -595,7 +595,7 @@ void CallPerfTest::TestMinTransmitBitrate(bool pad_to_min_bitrate) {
       if (pad_to_min_bitrate_) {
         encoder_config->min_transmit_bitrate_bps = kMinTransmitBitrateBps;
       } else {
-        DCHECK_EQ(0, encoder_config->min_transmit_bitrate_bps);
+        RTC_DCHECK_EQ(0, encoder_config->min_transmit_bitrate_bps);
       }
     }