Pointer watcher modifications to support laser pointer.

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 e167751e27d954113061d0d750b80efac401c833..d94c352f889987f43c06f6a43a50b865a3483a40 100644
--- a/ash/common/palette_delegate.h
+++ b/ash/common/palette_delegate.h
@@ -17,6 +17,8 @@ class PaletteDelegate {
   virtual ~PaletteDelegate() {}
 
   // TODO(jdufault): This delegate will be implemented in later CLs.

[jdufault, 2016/08/11 23:41:54]

Remove TODO

+  virtual void OnLaserModeEnabled() = 0;
+  virtual void OnLaserModeDisabled() = 0;
 
  private:
   DISALLOW_ASSIGN(PaletteDelegate);