Make "all user" services work when packaged.

services/service_manager/switches.cc

Index: services/service_manager/switches.cc
diff --git a/services/service_manager/switches.cc b/services/service_manager/switches.cc
index a96b6ae110ed9ad0fdacbad4693bbcdff9705fc6..1da7fb1db68906d52dcdf07c3443c99267ac111b 100644
--- a/services/service_manager/switches.cc
+++ b/services/service_manager/switches.cc
@@ -7,6 +7,9 @@
 namespace service_manager {
 namespace switches {
 
+// Enable the tracing service.
+const char kEnableTracing[] = "enable-tracing";

[Ken Rockot(use gerrit already), 2016/10/21 19:52:33]

Please change this to --enable-service-manager-tracing

--enable-tracing is already a content switch, and we use ServiceManager in
content.

Maybe they should eventually be the same flag, but I'd rather punt on that
decision.

[Jay Civelli, 2016/10/21 20:48:33]

Done.

+
 // Disables the sandbox for debugging.
 const char kNoSandbox[] = "no-sandbox";