Adds animated touch point and the hint box for touch calibration UX

ui/strings/ui_strings.grd

Index: ui/strings/ui_strings.grd
diff --git a/ui/strings/ui_strings.grd b/ui/strings/ui_strings.grd
index 522e2ba5d5abf52a76de8113099ec9a86f6e4d39..24b709678312b575b36385327ed25ee45f3ecccf 100644
--- a/ui/strings/ui_strings.grd
+++ b/ui/strings/ui_strings.grd
@@ -661,6 +661,12 @@ need to be translated for each locale.-->
       <message name="IDS_DISPLAY_TOUCH_CALIBRATION_EXIT_LABEL" desc="A message to notify the user about using the escape key to exit the calibration mode.">
         To exit calibration press Esc.
       </message>
+      <message name="IDS_DISPLAY_TOUCH_CALIBRATION_HINT_LABEL_TEXT" desc="Title of the hint message to inform the user what the next step is in touch calibration is">
+        Define your touchscreen
+      </message>
+      <message name="IDS_DISPLAY_TOUCH_CALIBRATION_HINT_SUBLABEL_TEXT" desc="Message to inform the user what the next step is in touch calibration is">
+        Tap the touch targets on your screen.
+      </message>
       
       <!-- Display names -->
       <message name="IDS_DISPLAY_NAME_UNKNOWN" desc="The name used for a display whose name is unknown, which is shown in the display settings and ash tray.">