Move MatchPattern to its own header and the base namespace.

chrome/common/trace_event_args_whitelist.cc

 // Copyright 2015 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 "chrome/common/trace_event_args_whitelist.h"
 
+#include "base/strings/pattern.h"
 #include "base/strings/string_tokenizer.h"
 #include "base/strings/string_util.h"
 
 namespace {
 
 const char* const kEventArgsWhitelist[][2] = {{"toplevel", "*"},
                                               {"__metadata", "thread_name"},
                                               {NULL, NULL}};
 
 }  // namespace
 
 bool IsTraceEventArgsWhitelisted(const char* category_group_name,
                                  const char* event_name) {
   base::CStringTokenizer category_group_tokens(
       category_group_name, category_group_name + strlen(category_group_name),
       ",");
   while (category_group_tokens.GetNext()) {
     const std::string& category_group_token = category_group_tokens.token();
     for (int i = 0; kEventArgsWhitelist[i][0] != NULL; ++i) {
       DCHECK(kEventArgsWhitelist[i][1]);
 
-      if (MatchPattern(category_group_token.c_str(),
-                       kEventArgsWhitelist[i][0]) &&
-          MatchPattern(event_name, kEventArgsWhitelist[i][1])) {
+      if (base::MatchPattern(category_group_token.c_str(),
+                             kEventArgsWhitelist[i][0]) &&
+          base::MatchPattern(event_name, kEventArgsWhitelist[i][1])) {
         return true;
       }
     }
   }
 
   return false;
 }