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

content/shell/app/blink_test_platform_support_win.cc

 // Copyright 2013 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 "content/shell/app/blink_test_platform_support.h"
 
 #include <windows.h>
 #include <iostream>
 #include <list>
 #include <string>
@@ skipping 43 matching lines @@
       ::AddFontMemResourceEx(const_cast<char*>(font_buffer.c_str()),
                              font_buffer.length(),
                              0,
                              &num_fonts);
   if (!font_handle) {
     std::cerr << "Failed to register Ahem font\n";
     return false;
   }
 
   // DirectWrite sandbox registration.
-  CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
+  base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
   command_line.AppendSwitchASCII(switches::kRegisterFontFiles,
                                  base::WideToUTF8(font_path.value()));
 
   return true;
 }
 
 }  // namespace
 
 bool CheckLayoutSystemDeps() {
   std::list<std::string> errors;
@@ skipping 33 matching lines @@
     std::cerr << *it << "\n";
   }
   return errors.empty();
 }
 
 bool BlinkTestPlatformInitialize() {
   return SetupFonts();
 }
 
 }  // namespace content