Move CommandLine to base namespace.

chrome/installer/setup/install_worker.h

Index: chrome/installer/setup/install_worker.h
diff --git a/chrome/installer/setup/install_worker.h b/chrome/installer/setup/install_worker.h
index abcd1e563cda51d06f9ae4a3d6f55fb9137bc6e7..41d1b042d91b776de04264555a916d9a18f2960e 100644
--- a/chrome/installer/setup/install_worker.h
+++ b/chrome/installer/setup/install_worker.h
@@ -13,10 +13,10 @@
 #include <vector>
 
 class BrowserDistribution;
-class CommandLine;
 class WorkItemList;
 
 namespace base {
+class CommandLine;
 class FilePath;
 class Version;
 }
@@ -161,7 +161,7 @@ void AddDeleteOldIELowRightsPolicyWorkItems(
 // Utility method currently shared between install.cc and install_worker.cc
 void AppendUninstallCommandLineFlags(const InstallerState& installer_state,
                                      const Product& product,
-                                     CommandLine* uninstall_cmd);
+                                     base::CommandLine* uninstall_cmd);
 
 // Refreshes the elevation policy on platforms where it is supported.
 void RefreshElevationPolicy();