Revamp the Incognito NTP on Desktop

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 456522f7be5e0967c3375a3b69d9d8f180430f4d..dcc835094b541748e1d7f76d7a5a004410ca757b 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -103537,6 +103537,7 @@ from previous Chrome versions.
   <int value="880510010" label="enable-permissions-bubbles"/>
   <int value="884106779" label="supervised-user-safesites"/>
   <int value="887011602" label="enable-spelling-auto-correct"/>
+  <int value="892899792" label="MaterialDesignIncognitoNTP:disabled"/>
   <int value="902608487" label="AutofillUpstreamRequestCvcIfMissing:enabled"/>
   <int value="903267263" label="disable-offline-pages"/>
   <int value="908523940" label="PassiveEventListenersDueToFling:disabled"/>
@@ -103777,6 +103778,7 @@ from previous Chrome versions.
   <int value="1821723343" label="disable-saml-signin"/>
   <int value="1827369558" label="AndroidPayIntegrationV1:disabled"/>
   <int value="1828660283" label="enable-webfonts-intervention-trigger"/>
+  <int value="1831835753" label="MaterialDesignIncognitoNTP:enabled"/>
   <int value="1838990777" label="V8Future:enabled"/>
   <int value="1844110073" label="enable-app-view"/>
   <int value="1847024354" label="enable-hotword-hardware"/>