Omnibox UI Experiments: Add Vertical Layout experiment (title-on-top).

chrome/browser/about_flags.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 2935 matching lines @@
 #endif
 
     {"omnibox-ui-max-autocomplete-matches",
      flag_descriptions::kOmniboxUIMaxAutocompleteMatchesName,
      flag_descriptions::kOmniboxUIMaxAutocompleteMatchesDescription, kOsDesktop,
      FEATURE_WITH_PARAMS_VALUE_TYPE(
          omnibox::kUIExperimentMaxAutocompleteMatches,
          kOmniboxUIMaxAutocompleteMatchesVariations,
          "OmniboxUIMaxAutocompleteVariations")},
 
+    {"omnibox-ui-vertical-layout",
+     flag_descriptions::kOmniboxUIVerticalLayoutName,
+     flag_descriptions::kOmniboxUIVerticalLayoutDescription, kOsDesktop,
+     FEATURE_VALUE_TYPE(omnibox::kUIExperimentVerticalLayout)},
+
     {"omnibox-ui-vertical-margin",
      flag_descriptions::kOmniboxUIVerticalMarginName,
      flag_descriptions::kOmniboxUIVerticalMarginDescription, kOsDesktop,
      FEATURE_WITH_PARAMS_VALUE_TYPE(omnibox::kUIExperimentVerticalMargin,
                                     kOmniboxUIVerticalMarginVariations,
                                     "OmniboxUIVerticalMarginVariations")},
 
     {"use-suggestions-even-if-few",
      flag_descriptions::kUseSuggestionsEvenIfFewFeatureName,
      flag_descriptions::kUseSuggestionsEvenIfFewFeatureDescription, kOsAll,
@@ skipping 256 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags