[omnibox] Add a chrome flag for Omnibox rich entities.

Bug: 1130372
Change-Id: I9b11877cc0babb5813c5bad155da046726994f84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2413721
Commit-Queue: Rachel Wong <[email protected]>
Reviewed-by: Thanh Nguyen <[email protected]>
Reviewed-by: Xiyuan Xia <[email protected]>
Cr-Commit-Position: refs/heads/master@{#808775}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 9ca1ad5..fdabe3f 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -6441,6 +6441,13 @@
      FEATURE_VALUE_TYPE(features::kUseSerialBusEnumerator)},
 #endif
 
+#if defined(OS_CHROMEOS)
+    {"omnibox-rich-entities-in-launcher",
+     flag_descriptions::kOmniboxRichEntitiesInLauncherName,
+     flag_descriptions::kOmniboxRichEntitiesInLauncherDescription, kOsCrOS,
+     FEATURE_VALUE_TYPE(app_list_features::kEnableOmniboxRichEntities)},
+#endif
+
     // NOTE: Adding a new flag requires adding a corresponding entry to enum
     // "LoginCustomFlags" in tools/metrics/histograms/enums.xml. See "Flag
     // Histograms" in tools/metrics/histograms/README.md (run the