Revert "Omnibox - Zero Suggest - Log When/Whether Contextual Search is Possible"

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 e652ad920372a38327b182f6cd14c81b9498063f..6e39a44f48916dda30e69ef8de63e104c021a62d 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -43870,59 +43870,6 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
-<histogram name="Omnibox.ZeroSuggest.Eligible.OnFocus"
-    enum="ZeroSuggestEligibleOnFocus">
-  <owner>mpearson@chromium.org</owner>
-  <summary>
-    Whether the user has settings configured so that the current page URL can be
-    sent to the suggest server to request contextual suggestions.  For example,
-    this is only supported for users who have Google as their default search
-    engine (unmodified version of Google), have search suggest enabled, are
-    signed-in and syncing without a custom passphrase, and don't have an
-    incognito window open.  There are other criteria too.  Recorded on focus in
-    the omnibox if there is default search provider and we've constructed a
-    suggest URL.
-
-    Some additional guidelines: if an incognito window is open, all focus events
-    will go into the &quot;generally ineligible&quot; bucket. Likewise, if the
-    current page is a search results page, we don't allow contextual suggestions
-    either so focus events on those pages go in the &quot;generally
-    ineligible&quot; bucket.  The difference between &quot;eligible&quot; and
-    &quot;generally eligible but not this time&quot; depends only the properties
-    of the current URL.
-
-    Recorded regardless of whether contextual or non-contextual zero suggest is
-    currently enabled on the user's platform.  However, if zero suggest (in all
-    forms) is entirely disabled, the user will be perpetually ineligible.
-  </summary>
-</histogram>
-
-<histogram name="Omnibox.ZeroSuggest.Eligible.OnProfileOpen"
-    enum="BooleanSupported">
-  <owner>mpearson@chromium.org</owner>
-  <summary>
-    Whether the user has settings configured so that the current page URL could
-    be sent to the suggest server to request contextual suggestions.  For
-    example, this is only supported for users who have Google as their default
-    search engine (unmodified version of Google), have search suggest enabled,
-    and are signed-in and syncing without a custom passphrase.  There are other
-    criteria too.  Recorded on profile open.  Note that opening an incognito
-    window (if none are currently open under the given profile) counts as
-    opening a new profile.
-
-    Some additional guidelines: unlike Omnibox.ZeroSuggest.Eligible.OnFocus,
-    because this is recorded on profile open, users cannot be declared
-    ineligible because they have an incognito window open (it's impossible to
-    have an incognito window open for a given profile at the time of profile
-    open) and also cannot be declared ineligible because the user is viewing a
-    search results page.  (We test this on-profile-open using an arbitrary URL.)
-
-    Recorded regardless of whether contextual or non-contextual zero suggest is
-    currently enabled on the user's platform.  However, if zero suggest (in all
-    forms) is entirely disabled, the user will be perpetually ineligible.
-  </summary>
-</histogram>
-
 <histogram name="Omnibox.ZeroSuggest.MostVisitedResultsCounterfactual">
   <owner>hfung@chromium.org</owner>
   <summary>
@@ -113612,21 +113559,6 @@ from previous Chrome versions.
   </int>
 </enum>
 
-<enum name="ZeroSuggestEligibleOnFocus" type="int">
-  <int value="0" label="Eligible">
-    URL can be currently sent to the suggest server.
-  </int>
-  <int value="1"
-      label="Generally eligible in current context but particular URL
-             ineligible">
-    URL cannot be sent to the suggest server but another URL would be eligible
-    at this time.
-  </int>
-  <int value="2" label="Generally ineligible in current context">
-    No URL can be sent to the suggest server at this time.
-  </int>
-</enum>
-
 </enums>
 
 <!-- Histogram suffixes list -->