Fix software mirror mode on Ozone part 2/2

ui/events/devices/device_data_manager.cc

Index: ui/events/devices/device_data_manager.cc
diff --git a/ui/events/devices/device_data_manager.cc b/ui/events/devices/device_data_manager.cc
index eb96c46478924f00385b6a865bb33b1580ac7411..99ca20c1ccfbb49754b865edf870260aefe4a8ed 100644
--- a/ui/events/devices/device_data_manager.cc
+++ b/ui/events/devices/device_data_manager.cc
@@ -33,6 +33,7 @@ DeviceDataManager::DeviceDataManager() {
 
   for (int i = 0; i < kMaxDeviceNum; ++i) {
     touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
+    touch_device_to_target_display_map_[i] = gfx::Display::kInvalidDisplayID;
     touch_radius_scale_map_[i] = 1.0;
   }
 }
@@ -119,6 +120,20 @@ int64_t DeviceDataManager::GetDisplayForTouchDevice(
   return gfx::Display::kInvalidDisplayID;
 }
 
+void DeviceDataManager::SetTargetDisplayForTouchDevice(
+    unsigned int touch_device_id,
+    int64_t target_display_id) {
+  if (IsTouchDeviceIdValid(touch_device_id))
+    touch_device_to_target_display_map_[touch_device_id] = target_display_id;
+}
+
+int64_t DeviceDataManager::GetTargetDisplayForTouchDevice(
+    unsigned int touch_device_id) {
+  if (IsTouchDeviceIdValid(touch_device_id))
+    return touch_device_to_target_display_map_[touch_device_id];
+  return gfx::Display::kInvalidDisplayID;
+}
+
 void DeviceDataManager::OnTouchscreenDevicesUpdated(
     const std::vector<TouchscreenDevice>& devices) {
   if (devices.size() == touchscreen_devices_.size() &&