Omnibox: Create Field Trial to Always Display Hint Text

chrome/browser/omnibox/omnibox_field_trial.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/omnibox/omnibox_field_trial.h"
 
 #include <cmath>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 412 matching lines @@
       kBundledExperimentFieldTrialName,
       kAnswersInSuggestRule) == "true";
 }
 
 bool OmniboxFieldTrial::AddUWYTMatchEvenIfPromotedURLs() {
   return chrome_variations::GetVariationParamValue(
       kBundledExperimentFieldTrialName,
       kAddUWYTMatchEvenIfPromotedURLsRule) == "true";
 }
 
+bool OmniboxFieldTrial::DisplayHintTextWhenPossible() {
+  return chrome_variations::GetVariationParamValue(
+      kBundledExperimentFieldTrialName,
+      kDisplayHintTextWhenPossibleRule) == "true";
+}
+
 const char OmniboxFieldTrial::kBundledExperimentFieldTrialName[] =
     "OmniboxBundledExperimentV1";
 const char OmniboxFieldTrial::kShortcutsScoringMaxRelevanceRule[] =
     "ShortcutsScoringMaxRelevance";
 const char OmniboxFieldTrial::kSearchHistoryRule[] = "SearchHistory";
 const char OmniboxFieldTrial::kDemoteByTypeRule[] = "DemoteByType";
 const char OmniboxFieldTrial::kHQPBookmarkValueRule[] =
     "HQPBookmarkValue";
 const char OmniboxFieldTrial::kHQPAllowMatchInTLDRule[] = "HQPAllowMatchInTLD";
 const char OmniboxFieldTrial::kHQPAllowMatchInSchemeRule[] =
     "HQPAllowMatchInScheme";
 const char OmniboxFieldTrial::kZeroSuggestRule[] = "ZeroSuggest";
 const char OmniboxFieldTrial::kZeroSuggestVariantRule[] = "ZeroSuggestVariant";
 const char OmniboxFieldTrial::kBookmarksIndexURLsRule[] = "BookmarksIndexURLs";
 const char OmniboxFieldTrial::kDisableInliningRule[] = "DisableInlining";
 const char OmniboxFieldTrial::kAnswersInSuggestRule[] = "AnswersInSuggest";
 const char OmniboxFieldTrial::kAddUWYTMatchEvenIfPromotedURLsRule[] =
     "AddUWYTMatchEvenIfPromotedURLs";
+const char OmniboxFieldTrial::kDisplayHintTextWhenPossibleRule[] =
+    "DisplayHintTextWhenPossible";
 
 const char OmniboxFieldTrial::kHUPNewScoringEnabledParam[] =
     "HUPExperimentalScoringEnabled";
 const char OmniboxFieldTrial::kHUPNewScoringTypedCountRelevanceCapParam[] =
     "TypedCountRelevanceCap";
 const char OmniboxFieldTrial::kHUPNewScoringTypedCountHalfLifeTimeParam[] =
     "TypedCountHalfLifeTime";
 const char OmniboxFieldTrial::kHUPNewScoringTypedCountScoreBucketsParam[] =
     "TypedCountScoreBuckets";
 const char OmniboxFieldTrial::kHUPNewScoringVisitedCountRelevanceCapParam[] =
@@ skipping 58 matching lines @@
   if (it != params.end())
     return it->second;
   // Fall back to the global instant extended context.
   it = params.find(rule + ":" + page_classification_str + ":*");
   if (it != params.end())
     return it->second;
   // Look up rule in the global context.
   it = params.find(rule + ":*:*");
   return (it != params.end()) ? it->second : std::string();
 }