Move CommandLine to base namespace.

chrome/browser/invalidation/invalidation_service_util.h

Index: chrome/browser/invalidation/invalidation_service_util.h
diff --git a/chrome/browser/invalidation/invalidation_service_util.h b/chrome/browser/invalidation/invalidation_service_util.h
index 7f44c316f2509c62156255d35da6650337b6f494..a18c7f547627ffb02633775bbb41910fc9da0bf6 100644
--- a/chrome/browser/invalidation/invalidation_service_util.h
+++ b/chrome/browser/invalidation/invalidation_service_util.h
@@ -7,12 +7,15 @@
 
 #include "jingle/notifier/base/notifier_options.h"
 
+namespace base {
 class CommandLine;
+}
 
 namespace invalidation {
 
 // Parses the given command line for notifier options.
-notifier::NotifierOptions ParseNotifierOptions(const CommandLine& command_line);
+notifier::NotifierOptions ParseNotifierOptions(
+    const base::CommandLine& command_line);
 
 // Generates a unique client ID for the invalidator.
 std::string GenerateInvalidatorClientId();