Move CommandLine to base namespace.

chrome/browser/chrome_browser_field_trials_desktop.h

Index: chrome/browser/chrome_browser_field_trials_desktop.h
diff --git a/chrome/browser/chrome_browser_field_trials_desktop.h b/chrome/browser/chrome_browser_field_trials_desktop.h
index 2668e7ee3acc5e63ce28399e63afc5e05869b918..141e01f43fba3688c5eb0a15d2900bfc2ee074b1 100644
--- a/chrome/browser/chrome_browser_field_trials_desktop.h
+++ b/chrome/browser/chrome_browser_field_trials_desktop.h
@@ -8,9 +8,12 @@
 #include "base/basictypes.h"
 #include "base/time/time.h"
 
-class CommandLine;
 class PrefService;
 
+namespace base {
+class CommandLine;
+}
+
 namespace chrome {
 
 // Sets up common desktop-only field trials.
@@ -18,7 +21,7 @@ namespace chrome {
 // SetupFieldTrials in chrome_browser_field_trials.cc if it is for all
 // platforms.
 // |local_state| is needed by some other methods called from within this one.
-void SetupDesktopFieldTrials(const CommandLine& parsed_command_line,
+void SetupDesktopFieldTrials(const base::CommandLine& parsed_command_line,
                              const base::Time& install_time,
                              PrefService* local_state);