[autofill] Add UKM for field type prediction quality and autofill outcome.

tools/metrics/ukm/ukm.xml

Index: tools/metrics/ukm/ukm.xml
diff --git a/tools/metrics/ukm/ukm.xml b/tools/metrics/ukm/ukm.xml
index fe71c7e7469ebada6db7cc26b1f20d0522f58db6..921390b02f8aa846bbc6425006cdaee504760854 100644
--- a/tools/metrics/ukm/ukm.xml
+++ b/tools/metrics/ukm/ukm.xml
@@ -35,6 +35,98 @@ be describing additional metrics about the same event.
   <metric name="DeveloperEngagement"/>
 </event>
 
+<event name="Autofill.FieldFillStatus">
+  <owner>rogerm@google.com</owner>

[Mathieu, 2017/06/27 21:02:27]

@chromium.org

[Roger McFarlane (Chromium), 2017/06/28 17:41:01]

Done.

+  <summary>
+    Recorded when Chrome validates field type predictions (on submit, on leaving
+    a form, on receiving a form with autocomplete attributes).
+  </summary>
+  <metric name="FieldSignature">
+    <summary>
+      The signature of the field. This is the hash identifier used to denote
+      this field for query and voting purposes. See
+      components/autofill/core/common/signatures_util.cc for more details.
+    </summary>
+  </metric>
+  <metric name="FormSignature">
+    <summary>
+      The signature of the form. This is the hash identifier used to denote this
+      form for query and voting purposes. See
+      components/autofill/core/common/signatures_util.cc for more details.
+    </summary>
+  </metric>
+  <metric name="IsAutofilled">
+    <summary>
+      The field is currently autofilled.
+    </summary>
+  </metric>
+  <metric name="MillisecondsSinceFormParsed">
+    <summary>
+      Time since form parse.
+    </summary>
+  </metric>
+  <metric name="PredictionSource">
+    <summary>
+      The system which generated the prediction: heuristics, server, overall.
+    </summary>
+  </metric>
+  <metric name="ValidationEvent">
+    <summary>
+      The event which triggered the validation: Submission, Left Form, Form has
+      Autocomplete attributes.
+    </summary>
+  </metric>
+  <metric name="WasPreviouslyAutofilled">
+    <summary>
+      The field was autofilled and subsequently edited.
+    </summary>
+  </metric>
+</event>
+
+<event name="Autofill.FieldTypeValidation">
+  <owner>rogerm@google.com</owner>
+  <summary>
+    Recorded when Chrome validates field type predictions (on submit, on leaving
+    a form, on receiving a form with autocomplete attributes).
+  </summary>
+  <metric name="ActualType">
+    <summary>
+      The observed type of the field. See: autofill::ServerFieldType
+    </summary>
+  </metric>
+  <metric name="FieldSignature">
+    <summary>
+      The signature of the field
+    </summary>
+  </metric>
+  <metric name="FormSignature">
+    <summary>
+      The signature of the form.
+    </summary>
+  </metric>
+  <metric name="MillisecondsSinceFormParsed">
+    <summary>
+      Time since form parse.
+    </summary>
+  </metric>
+  <metric name="PredictedType">
+    <summary>
+      The predicted type of the field. See: autofill::ServerFieldType
+    </summary>
+  </metric>
+  <metric name="PredictionSource">
+    <summary>
+      The system which generated the prediction: heuristics, server, overall.
+    </summary>
+  </metric>
+  <metric name="ValidationEvent">
+    <summary>
+      The event which triggered the validation: Submission, Left Form, Form has
+      Autocomplete attributes.
+    </summary>
+  </metric>
+</event>
+
 <event name="Autofill.FormSubmitted">
   <owner>jiahuiguo@google.com</owner>
   <summary>