Make callers of CommandLine use it via the base:: namespace.

tools/ipc_fuzzer/mutate/message_util.cc

 // Copyright 2014 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 <limits.h>
 #include <stdlib.h>
 #include <iostream>
 #include <string>
 #include <vector>
 
@@ skipping 55 matching lines @@
   return ipc_fuzzer::MessageNames::GetInstance()->TypeToName(msg->type());
 }
 
 bool MessageMatches(const IPC::Message* msg, const RE2& pattern) {
   return RE2::FullMatch(MessageName(msg), pattern);
 }
 
 }  // namespace
 
 int main(int argc, char** argv) {
-  CommandLine::Init(argc, argv);
-  CommandLine* cmd = CommandLine::ForCurrentProcess();
-  CommandLine::StringVector args = cmd->GetArgs();
+  base::CommandLine::Init(argc, argv);
+  base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
+  base::CommandLine::StringVector args = cmd->GetArgs();
 
   if (args.size() < 1 || args.size() > 2 || cmd->HasSwitch(kHelpSwitch)) {
     usage();
     return EXIT_FAILURE;
   }
 
   size_t start_index = 0;
   if (cmd->HasSwitch(kStartSwitch)) {
     int temp = atoi(cmd->GetSwitchValueASCII(kStartSwitch).c_str());
     if (temp > 0 )
@@ skipping 58 matching lines @@
     }
   } else {
     if (!ipc_fuzzer::MessageFile::Write(
             base::FilePath(output_file_name), output_message_vector)) {
       return EXIT_FAILURE;
     }
   }
 
   return EXIT_SUCCESS;
 }