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

webrtc/common_audio/resampler/sinc_resampler_unittest.cc

Index: webrtc/common_audio/resampler/sinc_resampler_unittest.cc
diff --git a/webrtc/common_audio/resampler/sinc_resampler_unittest.cc b/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
index 8bdcb251eebe1cd4729af8bc6598061b17eef6de..206a1741d4a5d5db61abfa80e87a4a6db288f9cd 100644
--- a/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
+++ b/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
@@ -163,8 +163,8 @@ TEST(SincResamplerTest, Convolve) {
 #endif
 
 // Benchmark for the various Convolve() methods.  Make sure to build with
-// branding=Chrome so that DCHECKs are compiled out when benchmarking.  Original
-// benchmarks were run with --convolve-iterations=50000000.
+// branding=Chrome so that RTC_DCHECKs are compiled out when benchmarking.
+// Original benchmarks were run with --convolve-iterations=50000000.
 TEST(SincResamplerTest, ConvolveBenchmark) {
   // Initialize a dummy resampler.
   MockSource mock_source;