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

extensions/browser/warning_set.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/warning_set.h"
 
 #include "base/files/file_path.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 186 matching lines @@
     std::string message = message_parameters_[i];
     if (StartsWithASCII(message, kTranslate, true)) {
       std::string extension_id = message.substr(sizeof(kTranslate) - 1);
       const extensions::Extension* extension =
           extensions->GetByID(extension_id);
       message = extension ? extension->name() : extension_id;
     }
     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_);
     case 1:
       return l10n_util::GetStringFUTF8(message_id_, final_parameters[0]);
     case 2:
       return l10n_util::GetStringFUTF8(message_id_, final_parameters[0],
           final_parameters[1]);
     case 3:
       return l10n_util::GetStringFUTF8(message_id_, final_parameters[0],
           final_parameters[1], final_parameters[2]);
     case 4:
       return l10n_util::GetStringFUTF8(message_id_, final_parameters[0],
           final_parameters[1], final_parameters[2], final_parameters[3]);
     default:
       NOTREACHED();
       return std::string();
   }
 }
 
 bool operator<(const Warning& a, const Warning& b) {
   if (a.extension_id() != b.extension_id())
     return a.extension_id() < b.extension_id();
   return a.warning_type() < b.warning_type();
 }
 
 }  // namespace extensions