Add Android-specific overrides to on-focus suggestions.

This change introduces Android specific ZPS configuration variants.

Bug: 1016557
Change-Id: I036474be17b657d608fed7f9225a0b5ace41408f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1873085
Commit-Queue: Ender <ender@google.com>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708261}

chrome/browser/about_flags.cc

@@ -860,6 +860,22 @@ const FeatureEntry::FeatureVariation kOmniboxDocumentProviderVariations[] = {
      base::size(kOmniboxDocumentProviderServerAndClientScoring), nullptr}};
 #endif  // defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_WIN)
 
+#ifdef OS_ANDROID
+const FeatureEntry::FeatureParam kOmniboxNTPZPSLocal[] = {
+    {"ZeroSuggestVariant:7:*", "Local"},
+    {"ZeroSuggestVariant:8:*", "Local"}};
+
+const FeatureEntry::FeatureParam kOmniboxNTPZPSRemote[] = {
+    {"ZeroSuggestVariant:7:*", "RemoteNoUrl"},
+    {"ZeroSuggestVariant:8:*", "RemoteNoUrl"}};
+
+const FeatureEntry::FeatureVariation kOmniboxOnFocusSuggestionsVariations[] = {
+    {"ZPS on NTP: Local History", kOmniboxNTPZPSLocal,
+     base::size(kOmniboxNTPZPSLocal), nullptr},
+    {"ZPS on NTP: Remote History", kOmniboxNTPZPSRemote,
+     base::size(kOmniboxNTPZPSRemote), "t3314248"},
+};
+#else
 const FeatureEntry::FeatureParam kOmniboxOnFocusSuggestionsParamSERP[] = {
     {"ZeroSuggestVariant:6:*", "RemoteSendUrl"}};
 const FeatureEntry::FeatureParam
@@ -889,6 +905,7 @@ const FeatureEntry::FeatureVariation kOmniboxOnFocusSuggestionsVariations[] = {
      base::size(kOmniboxOnFocusSuggestionsParamNTPOmniboxRealboxRemoteLocal),
      "t3316133" /* variation_id */},
 };
+#endif
 
 const FeatureEntry::FeatureParam kOmniboxUIMaxAutocompleteMatches3[] = {
     {OmniboxFieldTrial::kUIMaxAutocompleteMatchesParam, "3"}};