Enabled/disable touch screen in TabletPowerButtonController

ash/shell/shell_delegate_impl.h

Index: ash/shell/shell_delegate_impl.h
diff --git a/ash/shell/shell_delegate_impl.h b/ash/shell/shell_delegate_impl.h
index 073d3669902187316eab76f3f1ff24967b392185..7b450b31ea31171cdf4eecca76dcc217d472d8d5 100644
--- a/ash/shell/shell_delegate_impl.h
+++ b/ash/shell/shell_delegate_impl.h
@@ -53,6 +53,9 @@ class ShellDelegateImpl : public ShellDelegate {
   GPUSupport* CreateGPUSupport() override;
   base::string16 GetProductName() const override;
   gfx::Image GetDeprecatedAcceleratorImage() const override;
+  bool IsTouchscreenEnabledInPrefs(bool use_local_state) const override;
+  void SetTouchscreenEnabledInPrefs() override;

[Daniel Erat, 2016/12/03 00:08:44]

this won't compile, will it? it looks like you're missing the arguments here.

(which i guess raises the question of where this code is used... :-P)

[Qiang(Joe) Xu, 2016/12/03 01:02:44]

oops, I missed here. Compiler for chromeos and linux target cannot find this. It
is initialized in shell_browser_main_parts only. There aren't many docs there. I
am still not sure of this...

+  void UpdateTouchscreenStatusFromPrefs() override;
 
  private:
   ShelfDelegate* shelf_delegate_;