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

content/plugin/webplugin_delegate_stub.cc

Index: content/plugin/webplugin_delegate_stub.cc
diff --git a/content/plugin/webplugin_delegate_stub.cc b/content/plugin/webplugin_delegate_stub.cc
index 21d81126b122cb6dc32dc56208a3c5b74f428ac4..ae4ebee43f061bdaf73afd4a34007d4316e34f26 100644
--- a/content/plugin/webplugin_delegate_stub.cc
+++ b/content/plugin/webplugin_delegate_stub.cc
@@ -175,7 +175,8 @@ void WebPluginDelegateStub::OnInit(const PluginMsg_Init_Params& params,
     return;
   }
 
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
   base::FilePath path =
       command_line.GetSwitchValuePath(switches::kPluginPath);