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

chrome/browser/ui/webui/version_ui.cc

Index: chrome/browser/ui/webui/version_ui.cc
diff --git a/chrome/browser/ui/webui/version_ui.cc b/chrome/browser/ui/webui/version_ui.cc
index a6fd3b482641e9fb778aaa4426f23fa2a7623600..c79d6ca89fdccacd16f1fe52c2e4b4a24608883c 100644
--- a/chrome/browser/ui/webui/version_ui.cc
+++ b/chrome/browser/ui/webui/version_ui.cc
@@ -90,12 +90,14 @@ WebUIDataSource* CreateVersionUIDataSource() {
                                   IDS_ABOUT_VERSION_COMMAND_LINE);
 
 #if defined(OS_WIN)
-  html_source->AddString("command_line", base::WideToUTF16(
-      CommandLine::ForCurrentProcess()->GetCommandLineString()));
+  html_source->AddString(
+      "command_line",
+      base::WideToUTF16(
+          base::CommandLine::ForCurrentProcess()->GetCommandLineString()));
 #elif defined(OS_POSIX)
   std::string command_line;
   typedef std::vector<std::string> ArgvList;
-  const ArgvList& argv = CommandLine::ForCurrentProcess()->argv();
+  const ArgvList& argv = base::CommandLine::ForCurrentProcess()->argv();
   for (ArgvList::const_iterator iter = argv.begin(); iter != argv.end(); iter++)
     command_line += " " + *iter;
   // TODO(viettrungluu): |command_line| could really have any encoding, whereas