Add overscanCalibration methods to system_display.idl

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 22783a0658d0d8d94096669efef4ec45bddada59..6715ba8f40d0ee149c4475fbcfa9445ca868af53 100644
--- a/extensions/browser/api/system_display/display_info_provider.h
+++ b/extensions/browser/api/system_display/display_info_provider.h
@@ -22,6 +22,7 @@ namespace api {
 namespace system_display {
 struct DisplayProperties;
 struct DisplayUnitInfo;
+struct Insets;
 }
 }
 
@@ -52,6 +53,15 @@ class DisplayInfoProvider {
   // Get display information.
   virtual DisplayUnitInfoList GetAllDisplaysInfo();
 
+  // Implement overscan calbiration methods. See system_display.idl. These
+  // return false if |id| is invalid.
+  virtual bool OverscanCalibrationStart(const std::string& id);
+  virtual bool OverscanCalibrationAdjust(
+      const std::string& id,
+      const api::system_display::Insets& delta);
+  virtual bool OverscanCalibrationReset(const std::string& id);
+  virtual bool OverscanCalibrationComplete(const std::string& id);
+
  protected:
   DisplayInfoProvider();