--method-blocklist should also cover free functions.

tools/clang/rewrite_to_chrome_style/tests/functions-original.cc

Index: tools/clang/rewrite_to_chrome_style/tests/functions-original.cc
diff --git a/tools/clang/rewrite_to_chrome_style/tests/functions-original.cc b/tools/clang/rewrite_to_chrome_style/tests/functions-original.cc
index 5f2460316a956c01daacaffe61127caa3fc946b1..119a35ae9df6626c9a2e60e85c6da16422677d0f 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/functions-original.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/functions-original.cc
@@ -51,6 +51,11 @@ void F() {
 
 void bug640688(int);  // Declaration within blink namespace.
 
+// Tests for --method-blocklist cmdline parameter.
+namespace IdlFunctions {
+void foo();
+}  // namespace IdlFunctions
+
 }  // namespace blink
 
 // Definition outside of blink namespace.