Add chrome flag to hide shelf buttons in tablet mode

BUG=1012814

Change-Id: I9a35abc722be0e534569cc0c3aae3bbcb28ef29e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2025080
Commit-Queue: Toni Baržić <[email protected]>
Reviewed-by: Manu Cornet <[email protected]>
Cr-Commit-Position: refs/heads/master@{#736179}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 29eb522..9977e0f 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1839,6 +1839,10 @@
     {"instant-tethering", flag_descriptions::kTetherName,
      flag_descriptions::kTetherDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(chromeos::features::kInstantTethering)},
+    {"shelf-hide-buttons-in-tablet",
+     flag_descriptions::kHideShelfControlsInTabletModeName,
+     flag_descriptions::kHideShelfControlsInTabletModeDescription, kOsCrOS,
+     FEATURE_VALUE_TYPE(ash::features::kHideShelfControlsInTabletMode)},
     {"shelf-hotseat", flag_descriptions::kShelfHotseatName,
      flag_descriptions::kShelfHotseatDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(chromeos::features::kShelfHotseat)},