Move CommandLine to base namespace.

content/common/sandbox_win.h

Index: content/common/sandbox_win.h
diff --git a/content/common/sandbox_win.h b/content/common/sandbox_win.h
index af8f2185ac524ec8b1becba876bd1b97aa660b21..ac6ce90fb0aadbb19254614fc1c92235760e6315 100644
--- a/content/common/sandbox_win.h
+++ b/content/common/sandbox_win.h
@@ -7,7 +7,9 @@
 
 #include "sandbox/win/src/security_level.h"
 
+namespace base {
 class CommandLine;
+}
 
 namespace sandbox {
 class BrokerServices;
@@ -19,7 +21,7 @@ namespace content {
 
 // Wrapper around sandbox::TargetPolicy::SetJobLevel that checks if the sandbox
 // should be let to run without a job object assigned.
-void SetJobLevel(const CommandLine& cmd_line,
+void SetJobLevel(const base::CommandLine& cmd_line,
                  sandbox::JobLevel job_level,
                  uint32 ui_exceptions,
                  sandbox::TargetPolicy* policy);