Move a bunch of ash-only vector icons to ash/.

ash/common/system/chromeos/palette/tools/laser_pointer_mode.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_MODE_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_MODE_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/system/chromeos/palette/common_palette_tool.h"
+#include "ui/gfx/geometry/point.h"
 #include "ui/views/pointer_watcher.h"
 
+namespace base {
+class Timer;
+}
+
 namespace ash {
 
 class LaserPointerView;
 
 // Controller for the laser pointer functionality. Enables/disables laser
 // pointer as well as receives points and passes them off to be rendered.
 class ASH_EXPORT LaserPointerMode : public CommonPaletteTool,
                                     public views::PointerWatcher {
  public:
   explicit LaserPointerMode(Delegate* delegate);
   ~LaserPointerMode() override;
 
  private:
   friend class LaserPointerModeTestApi;
 
   // PaletteTool:
   PaletteGroup GetGroup() const override;
   PaletteToolId GetToolId() const override;
   void OnEnable() override;
   void OnDisable() override;
-  gfx::VectorIconId GetActiveTrayIcon() override;
+  const gfx::VectorIcon& GetActiveTrayIcon() const override;
   views::View* CreateView() override;
 
   // CommonPaletteTool:
-  gfx::VectorIconId GetPaletteIconId() override;
+  const gfx::VectorIcon& GetPaletteIcon() const override;
 
   // views::PointerWatcher:
   void OnPointerEventObserved(const ui::PointerEvent& event,
                               const gfx::Point& location_in_screen,
                               views::Widget* target) override;
 
   void StopTimer();
 
   // Timer callback which adds a point where the mouse was last seen. This
   // allows the trail to fade away when the mouse is stationary.
   void AddStationaryPoint();
 
   // Timer which will add a new stationary point when the mouse stops moving.
   // This will remove points that are too old.
   std::unique_ptr<base::Timer> timer_;
   int timer_repeat_count_ = 0;
 
   gfx::Point current_mouse_location_;
   std::unique_ptr<LaserPointerView> laser_pointer_view_;
 
   DISALLOW_COPY_AND_ASSIGN(LaserPointerMode);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_MODE_H_