Integrate registry_hash_store_contents with the rest of tracked prefs.

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 8ff974880e85f5cec62e134926ff133de736a928..e01ee793266d6c9d1ada8c14bf1196df58300ea1 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -101636,6 +101636,18 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="Platform.Tps65090Retries"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="TrackedPreferencesExternalValidators" separator=".">
+  <affected-histogram name="Settings.TrackedPreferenceChanged"/>
+  <affected-histogram name="Settings.TrackedPreferenceCleared"/>
+  <affected-histogram name="Settings.TrackedPreferenceInitialized"/>
+  <affected-histogram name="Settings.TrackedPreferenceMigratedLegacyDeviceId"/>
+  <affected-histogram name="Settings.TrackedPreferenceNullInitialized"/>
+  <affected-histogram name="Settings.TrackedPreferenceTrustedInitialized"/>
+  <suffix name="FromRegistryStore"

[gab, 2016/08/08 04:37:47]

Suffix in code is only "FromRegistry"

[proberge, 2016/08/31 17:30:17]

Done.

+      label="Validation using MACs in the WIndows Registry"/>

[gab, 2016/08/08 04:37:47]

Windows
 ^

[proberge, 2016/08/31 17:30:17]

Done.

+  <affected-histogram name="Settings.TrackedPreferenceUnchanged"/>

[gab, 2016/08/08 04:37:47]

Move with others

[proberge, 2016/08/31 17:30:17]

Done.

+</histogram_suffixes>
+
 <histogram_suffixes name="TrackedSplitPreferences" separator=".">
   <suffix name="extensions.settings" label="Extension IDs dictionary"/>
   <affected-histogram name="Settings.TrackedSplitPreferenceChanged"/>