Fixing a clang tidy caught at import time

test/core/util/stack_tracer_test.cc

@@ -22,6 +22,7 @@
 #include <string>
 
 #include "absl/debugging/symbolize.h"
+#include "absl/strings/match.h"
 
 #include <grpc/support/log.h>
 
@@ -31,7 +32,7 @@ TEST(StackTracerTest, Basic) {
   std::string stack_trace = grpc_core::testing::GetCurrentStackTrace();
   gpr_log(GPR_INFO, "stack_trace=%s", stack_trace.c_str());
 #if !defined(NDEBUG) && !defined(GPR_MUSL_LIBC_COMPAT)
-  EXPECT_TRUE(stack_trace.find("Basic") != std::string::npos);
+  EXPECT_TRUE(absl::StrContains(stack_trace, "Basic"));
 #endif
 }