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 106cd8371e25362ba239bf9a16738be204e30b89..1b4c2c24e976961fcfcd43edd21a7ef125d6a391 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -97230,6 +97230,8 @@ value.
   <int value="-1660972490" label="gpu-rasterization-msaa-sample-count"/>
   <int value="-1655535052" label="enable-pointer-events"/>
   <int value="-1654344175" label="disable-extension-info-dialog"/>
+  <int value="-1650111127"
+      label="NTPCondensedTileLayoutForSmallScreens:enabled"/>
   <int value="-1649778035" label="disable-clear-browsing-data-counters"/>
   <int value="-1631329950" label="ssl-version-max"/>
   <int value="-1630419335" label="enable-download-notification"/>
@@ -97356,6 +97358,8 @@ value.
   <int value="-1107762575" label="enable-data-reduction-proxy-config-client"/>
   <int value="-1102212525" label="enable-tcp-fastopen"/>
   <int value="-1099142083" label="V8Ignition:disabled"/>
+  <int value="-1085226050"
+      label="NTPCondensedTileLayoutForLargeScreens:disabled"/>
   <int value="-1084055006" label="disable-web-notification-custom-layouts"/>
   <int value="-1082302549" label="scan-cards-in-web-payments"/>
   <int value="-1078093206" label="ash-debug-shortcuts"/>
@@ -97789,6 +97793,8 @@ value.
   <int value="835018878" label="disable-quic"/>
   <int value="838887742" label="manual-enhanced-bookmarks"/>
   <int value="841343322" label="disable-new-korean-ime"/>
+  <int value="850168383"
+      label="NTPCondensedTileLayoutForSmallScreens:disabled"/>
   <int value="851085848" label="enable-settings-window"/>
   <int value="854730848" label="disable-app-info-dialog-mac"/>
   <int value="855746780" label="disable-physical-keyboard-autocorrect"/>
@@ -97830,6 +97836,8 @@ value.
   <int value="1043334401" label="disable-slimming-paint-invalidation"/>
   <int value="1050048304" label="enable-font-cache-scaling"/>
   <int value="1050321458" label="new-profile-management"/>
+  <int value="1052582870"
+      label="NTPCondensedTileLayoutForLargeScreens:enabled"/>
   <int value="1054910800" label="enable-timezone-tracking-option"/>
   <int value="1057887829" label="AutofillScanThemeDialog:disabled"/>
   <int value="1060319397" label="enable-data-reduction-proxy-carrier-test"/>