Adds touch calibration methods to system_display.idl API

extensions/browser/api/system_display/display_info_provider.h

Index: extensions/browser/api/system_display/display_info_provider.h
diff --git a/extensions/browser/api/system_display/display_info_provider.h b/extensions/browser/api/system_display/display_info_provider.h
index 54e44abf7f56e5844d674b887ec863a65bc6a6c5..4cccbdfdbe3d300f7a5e2d0d901044664f647686 100644
--- a/extensions/browser/api/system_display/display_info_provider.h
+++ b/extensions/browser/api/system_display/display_info_provider.h
@@ -20,10 +20,12 @@ namespace extensions {
 
 namespace api {
 namespace system_display {
+struct Bounds;
 struct DisplayLayout;
 struct DisplayProperties;
 struct DisplayUnitInfo;
 struct Insets;
+struct TouchCalibrationPairQuad;
 }
 }
 
@@ -71,6 +73,15 @@ class DisplayInfoProvider {
   virtual bool OverscanCalibrationReset(const std::string& id);
   virtual bool OverscanCalibrationComplete(const std::string& id);
 
+  // Implements touch calibration methods. See system_display.idl. This returns
+  // false if |id| is invalid.
+  virtual bool TouchCalibrationStart(const std::string& id);
+  virtual bool TouchCalibrationSet(
+      const std::string& id,
+      const api::system_display::TouchCalibrationPairQuad& pairs,
+      const api::system_display::Bounds& bounds);
+  virtual bool TouchCalibrationReset(const std::string& id);
+
  protected:
   DisplayInfoProvider();