Remove ShouldBlockShelfAutoHide().

ash/system/palette/palette_tray.h

Index: ash/system/palette/palette_tray.h
diff --git a/ash/system/palette/palette_tray.h b/ash/system/palette/palette_tray.h
index 5bd0deb6fa36658d009e77e93ec2a92dd0154144..0218715a3d63ef41799394f8f7513a7d3df368e4 100644
--- a/ash/system/palette/palette_tray.h
+++ b/ash/system/palette/palette_tray.h
@@ -66,9 +66,6 @@ class ASH_EXPORT PaletteTray : public TrayBackgroundView,
   void RecordPaletteOptionsUsage(PaletteTrayOptions option) override;
   void RecordPaletteModeCancellation(PaletteModeCancelType type) override;
 
-  // Returns true if the shelf should not autohide.
-  bool ShouldBlockShelfAutoHide() const;
-
   // Opens up the palette if it is not already open. Returns true if the palette
   // was opened.
   bool ShowPalette();
@@ -117,11 +114,6 @@ class ASH_EXPORT PaletteTray : public TrayBackgroundView,
   // Weak pointer, will be parented by TrayContainer for its lifetime.
   views::ImageView* icon_;
 
-  // The shelf auto-hide state is checked during the tray constructor, so we
-  // have to use a helper variable instead of just checking if we have a tray
-  // instance.
-  bool should_block_shelf_auto_hide_ = false;
-
   // Cached palette enabled/disabled pref value.
   bool is_palette_enabled_ = true;