Bootstrap Mojo IPC independent of Chrome IPC

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 22afe190c277d16dba2c5976048355ef94c2b30f..2a8a8eb99b40d7b3b2af64ad7678b78dea205755 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -624,6 +624,10 @@ const char kMemoryMetrics[]                 = "memory-metrics";
 // Use a Mojo-based LocalStorage implementation.
 const char kMojoLocalStorage[]              = "mojo-local-storage";
 
+// A random token a child process can exchange for a primordial message pipe
+// to the browser.
+const char kMojoPrimordialPipeToken[]       = "mojo-primordial-pipe-token";
+
 // Mutes audio sent to the audio device so it is not audible during
 // automated testing.
 const char kMuteAudio[]                     = "mute-audio";