Move CommandLine to base namespace.

content/browser/browser_child_process_host_impl.h

Index: content/browser/browser_child_process_host_impl.h
diff --git a/content/browser/browser_child_process_host_impl.h b/content/browser/browser_child_process_host_impl.h
index 594c611ab8cf8faddfc8a6965ff907272f2412d7..24bc1e78c3c2b83d03f60911bb23ced88cb6ce32 100644
--- a/content/browser/browser_child_process_host_impl.h
+++ b/content/browser/browser_child_process_host_impl.h
@@ -17,6 +17,10 @@
 #include "content/public/browser/child_process_data.h"
 #include "content/public/common/child_process_host_delegate.h"
 
+namespace base {
+class CommandLine;
+}
+
 namespace content {
 
 class BrowserChildProcessHostIterator;
@@ -44,7 +48,7 @@ class CONTENT_EXPORT BrowserChildProcessHostImpl
   virtual bool Send(IPC::Message* message) OVERRIDE;
   virtual void Launch(
       SandboxedProcessLauncherDelegate* delegate,
-      CommandLine* cmd_line) OVERRIDE;
+      base::CommandLine* cmd_line) OVERRIDE;
   virtual const ChildProcessData& GetData() const OVERRIDE;
   virtual ChildProcessHost* GetHost() const OVERRIDE;
   virtual base::TerminationStatus GetTerminationStatus(