mac: Prevent Address Book permissions dialog from erroneously appearing.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 9f0f16be938fb82af21bb52fbf60ef9e2a80baa5..7b5303159a653e63c551384cdaf63ab352d7959b 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -1562,6 +1562,14 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Autofill.AddressBookReprompt" enum="BooleanAvailable">

[Ilya Sherman, 2014/06/17 19:55:01]

Let's name the histogram something more like
"Autofill.AddressBook.AccessSuppressed" or "Autofill.AddressBook.QuerySkipped"
or something like that.

[Ilya Sherman, 2014/06/17 19:55:01]

nit: Please use a more custom-tailored enum, possibly defining a new one if
there isn't an appropriate one already defined.

[erikchen, 2014/06/17 22:36:06]

I used "Autofill.AddressBook.AccessSkipped"

[erikchen, 2014/06/17 22:36:06]

I used a new enum BooleanSkipped

+  <owner>erikchen@chromium.org</owner>
+  <summary>
+    Whether an attempt to access the Mac AddressBook was skipped because doing
+    so would incorrectly cause the appearance of the permissions dialog.

[Ilya Sherman, 2014/06/17 19:55:01]

Please go into a bit more detail as to why this might happen, i.e. that the
binary on disk has changed via autoupdate prior to the first AddressBook access.

[erikchen, 2014/06/17 22:36:06]

I've expanded the comment.

+  </summary>
+</histogram>
+
 <histogram name="Autofill.AddressSuggestionsCount">
   <owner>isherman@chromium.org</owner>
   <summary>