Touch gestures for System Tray/ IME/ Stylus/ Notifications

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 3d818a9afeb8b90e9e6c27d5f62427f739a693b3..f8375c8b101adaa46de52cacec3ad0acc1faf4e5 100644
--- a/ash/system/palette/palette_tray.h
+++ b/ash/system/palette/palette_tray.h
@@ -38,15 +38,11 @@ class ASH_EXPORT PaletteTray : public TrayBackgroundView,
                                public SessionObserver,
                                public ShellObserver,
                                public PaletteToolManager::Delegate,
-                               public ui::InputDeviceEventObserver,
-                               public views::TrayBubbleView::Delegate {
+                               public ui::InputDeviceEventObserver {
  public:
   explicit PaletteTray(Shelf* shelf);
   ~PaletteTray() override;
 
-  // ActionableView:
-  bool PerformAction(const ui::Event& event) override;
-
   // SessionObserver:
   void OnSessionStateChanged(session_manager::SessionState state) override;
 
@@ -59,6 +55,10 @@ class ASH_EXPORT PaletteTray : public TrayBackgroundView,
   void HideBubbleWithView(const views::TrayBubbleView* bubble_view) override;
   void AnchorUpdated() override;
   void Initialize() override;
+  bool PerformAction(const ui::Event& event) override;
+  void CloseBubble() override;
+  void ShowBubble() override;
+  views::TrayBubbleView* GetBubbleView() override;
 
   // PaletteToolManager::Delegate:
   void HidePalette() override;
@@ -66,10 +66,6 @@ class ASH_EXPORT PaletteTray : public TrayBackgroundView,
   void RecordPaletteOptionsUsage(PaletteTrayOptions option) override;
   void RecordPaletteModeCancellation(PaletteModeCancelType type) override;
 
-  // Opens up the palette if it is not already open. Returns true if the palette
-  // was opened.
-  bool ShowPalette();
-
   // Returns true if the palette tray contains the given point. This is useful
   // for determining if an event should be propagated through to the palette.
   bool ContainsPointInScreen(const gfx::Point& point);