Using "static_assert" in lieu of "COMPILE_ASSERT" in extensions module

extensions/browser/warning_set.cc

Index: extensions/browser/warning_set.cc
diff --git a/extensions/browser/warning_set.cc b/extensions/browser/warning_set.cc
index 63dc5504a608e545be13111cdb7dc6e5ca4ed3ed..54c1c8bfc1431a9ee8729abbbfadaa7a11327006 100644
--- a/extensions/browser/warning_set.cc
+++ b/extensions/browser/warning_set.cc
@@ -204,7 +204,8 @@ std::string Warning::GetLocalizedMessage(const ExtensionSet* extensions) const {
     final_parameters.push_back(base::UTF8ToUTF16(net::EscapeForHTML(message)));
   }
 
-  COMPILE_ASSERT(kMaxNumberOfParameters == 4u, YouNeedToAddMoreCaseStatements);
+  static_assert(kMaxNumberOfParameters == 4u,
+                "You Need To Add More Case Statements");
   switch (final_parameters.size()) {
     case 0:
       return l10n_util::GetStringUTF8(message_id_);