Merge changes from topic "clang_stable_r498229"

* changes:
  Suppress clang-tidy warnings causing build errors after clang update
  Suppress performance-avold-endl clang-tidy warning

cc/config/tidy.go

@@ -42,6 +42,8 @@ var (
 		"-bugprone-unchecked-optional-access",
 		// http://b/265438407
 		"-misc-use-anonymous-namespace",
+		// http://b/285005947
+		"-performance-avoid-endl",
 	}
 
 	// Some clang-tidy checks are included in some tidy_checks_as_errors lists,
@@ -56,6 +58,14 @@ var (
 		"-bugprone-signed-char-misuse",
 		// http://b/241819232
 		"-misc-const-correctness",
+		// http://b/285356805
+		"-bugprone-unsafe-functions",
+		"-cert-msc24-c",
+		"-cert-msc33-c",
+		// http://b/285356799
+		"-modernize-type-traits",
+		// http://b/285361108
+		"-readability-avoid-unconditional-preprocessor-if",
 	}
 
 	extraArgFlags = []string{