Omnibox UI Experiments: Add feature flags for 3 URL elision experiments.

chrome/browser/flag_descriptions.cc

Index: chrome/browser/flag_descriptions.cc
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 648fbf9b6c1bb65a093375f6f302c64ac38291a8..edd8853afa9e4d3896b712d4ced5eba81c9919f6 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -3090,6 +3090,22 @@ const char kOmniboxDisplayTitleForCurrentUrlDescription[] =
     "the current page is provided as the first suggestion without a title. "
     "Enabling this flag causes the title to be displayed.";
 
+const char kOmniboxUIHideSuggestionUrlPathName[] =
+    "Omnibox UI Hide Suggestion URL Path";
+const char kOmniboxUIHideSuggestionUrlPathDescription[] =
+    "Elides the paths of suggested URLs in the Omnibox dropdown.";
+
+const char kOmniboxUIHideSuggestionUrlSchemeName[] =
+    "Omnibox UI Hide Suggestion URL Scheme";
+const char kOmniboxUIHideSuggestionUrlSchemeDescription[] =
+    "Elides the schemes of suggested URLs in the Omnibox dropdown.";
+
+const char kOmniboxUIHideSuggestionUrlTrivialSubdomainsName[] =
+    "Omnibox UI Hide Suggestion URL Trivial Subdomains";
+const char kOmniboxUIHideSuggestionUrlTrivialSubdomainsDescription[] =
+    "Elides trivially informative subdomains from suggested URLs in the "
+    "Omnibox dropdown (e.g. www. and m.).";
+
 const char kOmniboxUIMaxAutocompleteMatchesName[] =
     "Omnibox UI Max Autocomplete Matches";