Add DelayNavigationThrottle

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 9f40d834e79450ea350d9ae8545cb19ae2e72de7..07b09813179f4b14ffd6a9e16ff1a55f2008d2d5 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -99778,6 +99778,7 @@ from previous Chrome versions.
   <int value="-1363709707" label="MaterialDesignHistory:disabled"/>
   <int value="-1358669137" label="enable-supervised-user-blacklist"/>
   <int value="-1357655121" label="enable-iframe-based-signin"/>
+  <int value="-1349896789" label="DelayNavigation:enabled"/>
   <int value="-1349872906"
       label="disallow-autofill-sync-credential-for-reauth"/>
   <int value="-1349532167" label="enable-wifi-credential-sync"/>
@@ -100451,6 +100452,7 @@ from previous Chrome versions.
   <int value="1460958818" label="NTPForeignSessionsSuggestions:enabled"/>
   <int value="1465624446" label="disable-zero-copy"/>
   <int value="1466380480" label="enable-device-discovery-notifications"/>
+  <int value="1466502102" label="DelayNavigation:disabled"/>
   <int value="1469407485" label="disable-accelerated-2d-canvas"/>
   <int value="1479248574" label="disable-voice-input"/>
   <int value="1481562816" label="disable-password-link"/>