Palette tool laser prototype.

ash/common/palette_delegate.h

Index: ash/common/palette_delegate.h
diff --git a/ash/common/palette_delegate.h b/ash/common/palette_delegate.h
index 34d0d11ad87e9c06d8a46959836a4ad04d893ac4..31b6b1558a37bb35ba931b701c0050043e584ba0 100644
--- a/ash/common/palette_delegate.h
+++ b/ash/common/palette_delegate.h
@@ -22,6 +22,10 @@ class PaletteDelegate {
   // Returns true if there is a note-taking application available.
   virtual bool HasNoteApp() = 0;
 
+  // Called when the laser pointer has been enabled or disabled.
+  virtual void OnLaserPointerEnabled() = 0;
+  virtual void OnLaserPointerDisabled() = 0;
+
  private:
   DISALLOW_ASSIGN(PaletteDelegate);
 };