Support absl::string_view in RTC_CHECK.

Bug: None
Change-Id: I8d4c296f1ac16a96adb88401f78ee9f65911bfc0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126482
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27052}

rtc_base/BUILD.gn

@@ -341,6 +341,7 @@ rtc_source_set("checks") {
   deps = [
     ":safe_compare",
     "system:inline",
+    "//third_party/abseil-cpp/absl/strings",
   ]
   if (is_android) {
     libs += [ "log" ]

rtc_base/checks.cc

@@ -54,7 +54,7 @@ __attribute__((__format__(__printf__, 2, 3)))
   }
   va_end(args);
 }
-}
+}  // namespace
 
 namespace rtc {
 namespace webrtc_checks_impl {
@@ -96,6 +96,11 @@ bool ParseArg(va_list* args, const CheckArgType** fmt, std::string* s) {
     case CheckArgType::kStdString:
       s->append(*va_arg(*args, const std::string*));
       break;
+    case CheckArgType::kStringView: {
+      const absl::string_view sv = *va_arg(*args, const absl::string_view*);
+      s->append(sv.data(), sv.size());
+      break;
+    }
     case CheckArgType::kVoidP:
       AppendFormat(s, "%p", va_arg(*args, const void*));
       break;

rtc_base/checks.h

@@ -42,6 +42,7 @@ RTC_NORETURN void rtc_FatalMessage(const char* file, int line, const char* msg);
 
 #include <string>
 
+#include "absl/strings/string_view.h"
 #include "rtc_base/numerics/safe_compare.h"
 #include "rtc_base/system/inline.h"
 
@@ -99,6 +100,7 @@ enum class CheckArgType : int8_t {
   kLongDouble,
   kCharP,
   kStdString,
+  kStringView,
   kVoidP,
 
   // kCheckOp doesn't represent an argument type. Instead, it is sent as the
@@ -157,6 +159,10 @@ inline Val<CheckArgType::kStdString, const std::string*> MakeVal(
     const std::string& x) {
   return {&x};
 }
+inline Val<CheckArgType::kStringView, const absl::string_view*> MakeVal(
+    const absl::string_view& x) {
+  return {&x};
+}
 
 inline Val<CheckArgType::kVoidP, const void*> MakeVal(const void* x) {
   return {x};