[NTP] Enable FakeboxSearchIconOnNtp by default

Enable FakeboxSearchIconOnNtp by default in preparation for launch.

Bug: 958655
Change-Id: Ibe559f30ac8cb73d63d0fdd38ebffbab5abe781f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1691432Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Kyle Milka <kmilka@chromium.org>
Commit-Queue: Kristi Park <kristipark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#675738}

chrome/browser/search/ntp_features.cc

@@ -33,7 +33,7 @@ const base::Feature kRemoveNtpFakebox{"RemoveNtpFakebox",
 // If enabled, show a search icon (magnifier glass) in the NTP fakebox. Also
 // implicitly enabled by |kFakeboxSearchIconColorOnNtp|.
 const base::Feature kFakeboxSearchIconOnNtp{"FakeboxSearchIconOnNtp",
-                                            base::FEATURE_DISABLED_BY_DEFAULT};
+                                            base::FEATURE_ENABLED_BY_DEFAULT};
 
 // If enabled, show a blue search icon (magnifier glass) in the NTP fakebox.
 const base::Feature kFakeboxSearchIconColorOnNtp{

testing/variations/fieldtrial_testing_config.json

@@ -3444,8 +3444,7 @@
                         "OmniboxRichEntitySuggestions",
                         "OmniboxTailSuggestions",
                         "OmniboxUIExperimentMaxAutocompleteMatches",
-                        "QueryInOmnibox",
-                        "UseAlternateFakeboxOnNtp"
+                        "QueryInOmnibox"
                     ]
                 }
             ]