Add flag for disabling minimum of ntp tile suggestions

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 e4a2b2544b944f67cab2b4df9bb5c02a8fef7bed..3fe3d9056db7cc01e652a548e5fbdd3b8982492e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -104053,6 +104053,7 @@ from previous Chrome versions.
   <int value="-516845951" label="enable-embedded-extension-options"/>
   <int value="-512971943" label="disable-one-copy"/>
   <int value="-510488450" label="disable-pnacl"/>
+  <int value="-509021694" label="DisableSuggestionsMinimum:enabled"/>
   <int value="-508143738" label="disable-accelerated-fixed-root-background"/>
   <int value="-506706655" label="respect-autocomplete-off-autofill"/>
   <int value="-505679399" label="FontCacheScaling:enabled"/>
@@ -104316,6 +104317,7 @@ from previous Chrome versions.
   <int value="581118445" label="enable-eol-notification"/>
   <int value="581355159" label="ContentSuggestionsCategoryRanker:disabled"/>
   <int value="584541349" label="ContextualSearchSingleActions:disabled"/>
+  <int value="585583408" label="DisableSuggestionsMinimum:disabled"/>
   <int value="586021329" label="VibrateRequiresUserGesture:enabled"/>
   <int value="592050831" label="disable-slimming-paint"/>
   <int value="593707592" label="disable-network-portal-notification"/>