RTC_CHECK and RTC_DCHECK macros for C

webrtc/base/checks.cc

Index: webrtc/base/checks.cc
diff --git a/webrtc/base/checks.cc b/webrtc/base/checks.cc
index d9dc8f2d63bff7c2d51e5dce77ca9ef8ec4c486c..6aaaf9ff83bee8cb70452c0be1b864c40f6eb0b5 100644
--- a/webrtc/base/checks.cc
+++ b/webrtc/base/checks.cc
@@ -133,3 +133,8 @@ template std::string* MakeCheckOpString<std::string, std::string>(
 #endif
 
 }  // namespace rtc
+
+// Function to call from the C version of the RTC_CHECK and RTC_DCHECK macros.
+NO_RETURN void rtc_FatalMessage(const char* file, int line, const char* msg) {
+  rtc::FatalMessage(file, line).stream() << msg;
+}