Blacklist renaming inside blink::protocol namespace.

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

Index: tools/clang/rewrite_to_chrome_style/tests/namespaces-original.cc
diff --git a/tools/clang/rewrite_to_chrome_style/tests/namespaces-original.cc b/tools/clang/rewrite_to_chrome_style/tests/namespaces-original.cc
index ff240123d26c84857497723b1c08c3ccde77a2be..0383450ce136b62c288bc7e58166b9b34a67f7a1 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/namespaces-original.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/namespaces-original.cc
@@ -12,6 +12,11 @@ namespace nested {
 void foo();
 }  // namespace nested
 
+// blink::protocol namespace is blacklisted.
+namespace protocol {
+void foo();
+}  // namespace protocol
+
 }  // namespace blink
 
 namespace WTF {