Updates display manager and display preferences to handle touch calibration data.

ui/display/manager/managed_display_info.h

Index: ui/display/manager/managed_display_info.h
diff --git a/ui/display/manager/managed_display_info.h b/ui/display/manager/managed_display_info.h
index 1fb48a87982a257e7c798a3641f8f614bc2f7b49..5161844a1db305623d247a9794aa16cd5cbeb376 100644
--- a/ui/display/manager/managed_display_info.h
+++ b/ui/display/manager/managed_display_info.h
@@ -34,6 +34,27 @@ struct DISPLAY_EXPORT TouchCalibrationData {
                        const gfx::Size& bounds);
   TouchCalibrationData(const TouchCalibrationData& calibration_data);
 
+  bool operator==(TouchCalibrationData other) const {
+    if (bounds != other.bounds)
+      return false;
+    bool checked[4] = {false};
+    size_t match = 0;
+    // The Calibration point pairs need not be in order.
+    for (size_t row = 0; row < point_pairs.size(); row++) {
+      for (size_t o_row=0; o_row < other.point_pairs.size(); o_row++) {

[oshima, 2016/12/02 22:33:41]

shouldn't this always be paint_pairs.size() == other.point_pairs.size() == 4?

can you always short the data by 1st x point so that you can just compare using
== ?

[malaykeshav, 2016/12/03 02:01:28]

Done

+        if (checked[o_row])
+          continue;
+        if (other.point_pairs[o_row].first == point_pairs[row].first &&
+            other.point_pairs[o_row].second == point_pairs[row].second) {
+          checked[o_row] = true;
+          match++;
+          break;
+        }
+      }
+    }
+    return match == point_pairs.size();
+  }
+
   // Calibration point pairs used during calibration. Each point pair contains a
   // display point and the corresponding touch point.
   CalibrationPointPairQuad point_pairs;