Even more instrumentation to diagnose an Android render crash.

base/metrics/field_trial.h

Index: base/metrics/field_trial.h
diff --git a/base/metrics/field_trial.h b/base/metrics/field_trial.h
index ef3538595773937d0971b7eef07da2d61fd9815a..a937683beaa47dddb9f363d88f48e17a324cccc8 100644
--- a/base/metrics/field_trial.h
+++ b/base/metrics/field_trial.h
@@ -347,6 +347,14 @@ class BASE_EXPORT FieldTrialList {
   // Destructor Release()'s references to all registered FieldTrial instances.
   ~FieldTrialList();
 
+  // TODO(asvitkine): Temporary function to diagnose http://crbug.com/359406.
+  // Remove when that bug is fixed. This enables using a global map that checks
+  // the state of field trials between possible FieldTrialList instances. If
+  // enabled, a CHECK will be hit if it's seen that a field trial is given a
+  // different state then what was specified to a renderer process launch
+  // command line.
+  static void EnableGlobalStateChecks();
+
   // Get a FieldTrial instance from the factory.
   //
   // |name| is used to register the instance with the FieldTrialList class,