Update full-form autofill config to always query the field trial state.

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 26257ab4a890b70c257a23e5dfb854c0bf2c78d7..9ccf3b60db6449def69fcafa0d0a37fb55869219 100644
--- a/base/metrics/field_trial.h
+++ b/base/metrics/field_trial.h
@@ -405,7 +405,9 @@ class BASE_EXPORT FieldTrialList {
   static int FindValue(const std::string& name);
 
   // Returns the group name chosen for the named trial, or the

[Alexei Svitkine (slow), 2015/08/14 16:15:36]

Nit: Seems like some of the following line can still fit on this one - can you
clean this up too while you're updating the comment?

[Justin Donnelly, 2015/08/14 17:16:53]

Done.

-  // empty string if the trial does not exist.
+  // empty string if the trial does not exist. The first call of this function
+  // on a given field trial will mark it as active, so that its state will be
+  // reported with usage metrics, crashes, etc.
   static std::string FindFullName(const std::string& name);
 
   // Returns true if the named trial has been registered.