Adds touch calibration methods to system_display.idl API

extensions/browser/api/system_display/system_display_api.cc

Index: extensions/browser/api/system_display/system_display_api.cc
diff --git a/extensions/browser/api/system_display/system_display_api.cc b/extensions/browser/api/system_display/system_display_api.cc
index ab613a46b45d79892f90dfaf38d8922f48c20915..f1afac7bade4ca4baba4c2b443b88282fbdbd8eb 100644
--- a/extensions/browser/api/system_display/system_display_api.cc
+++ b/extensions/browser/api/system_display/system_display_api.cc
@@ -138,4 +138,33 @@ SystemDisplayOverscanCalibrationCompleteFunction::Run() {
   return RespondNow(NoArguments());
 }
 
+ExtensionFunction::ResponseAction
+SystemDisplayTouchCalibrationStartFunction::Run() {
+  std::unique_ptr<display::TouchCalibrationStart::Params> params(
+      display::TouchCalibrationStart::Params::Create(*args_));
+  if (!DisplayInfoProvider::Get()->TouchCalibrationStart(params->id))
+    return RespondNow(Error("Invalid display ID: " + params->id));

[stevenjb, 2016/11/29 18:53:29]

nit: It might be nice to explictly check for in-progress (vs. some other error)
if that makes sense.

[malaykeshav, 2016/11/30 00:53:16]

Done

+  return RespondNow(NoArguments());
+}
+
+ExtensionFunction::ResponseAction
+SystemDisplayTouchCalibrationSetFunction::Run() {
+  std::unique_ptr<display::TouchCalibrationSet::Params> params(
+      display::TouchCalibrationSet::Params::Create(*args_));
+  if (!DisplayInfoProvider::Get()->TouchCalibrationSet(params->id,
+                                                       params->pairs,
+                                                       params->bounds))
+    return RespondNow(Error("Invalid display ID: " + params->id));

[stevenjb, 2016/11/29 18:53:29]

{}

[malaykeshav, 2016/11/30 00:53:16]

Done

+  return RespondNow(NoArguments());
+}
+
+ExtensionFunction::ResponseAction
+SystemDisplayTouchCalibrationResetFunction::Run() {
+  std::unique_ptr<display::TouchCalibrationReset::Params> params(
+      display::TouchCalibrationReset::Params::Create(*args_));
+  if (!DisplayInfoProvider::Get()->TouchCalibrationReset(params->id))
+    return RespondNow(Error("Invalid display ID: " + params->id));
+  return RespondNow(NoArguments());
+}
+
 }  // namespace extensions