Add feature for condensed NTP tiles.

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 a54cd2d0a99184ed3ab68f27dd84471cf76e7bf6..df0613de8423b8275326dd89e44e49417104393a 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -97880,6 +97880,7 @@ value.
   <int value="-138773929" label="PassiveDocumentEventListeners:enabled"/>
   <int value="-122492389" label="enable-browser-task-scheduler"/>
   <int value="-119055644" label="GenericSensor:enabled"/>
+  <int value="-108881882" label="NTPCondensedTileLayout:enabled"/>
   <int value="-102537270" label="extension-content-verification"/>
   <int value="-99781021" label="disable-roboto-font-ui"/>
   <int value="-89690053" label="MaterialDesignUserManager:enabled"/>
@@ -98060,6 +98061,7 @@ value.
   <int value="684806628" label="TranslateLanguageByULP:disabled"/>
   <int value="689489984" label="disable-zero-suggest"/>
   <int value="690185633" label="NonValidatingReloadOnNormalReload:disabled"/>
+  <int value="691020108" label="NTPCondensedTileLayout:disabled"/>
   <int value="693012666" label="QuickUnlockPin:disabled"/>
   <int value="709850261" label="disable-touch-editing"/>
   <int value="711424932" label="enable-cloud-print-xps"/>