Revert MtFinger renaming

Previous cl rename MtFinger to TouchPoint. It seems to break some scripts. This
patch revert the renaming.

BUG=None
TEST=run webplot

Change-Id: I9e818b576a9ddf620dd5240a3e02aa1e06563f5f
Reviewed-on: https://chromium-review.googlesource.com/550577
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Charlie Mooney <charliemooney@chromium.org>
diff --git a/webplot/webplot.js b/webplot/webplot.js
index 03020a5..ad14e0a 100644
--- a/webplot/webplot.js
+++ b/webplot/webplot.js
@@ -223,19 +223,19 @@
  *   MtbSnapshot(
  *     syn_time=1420522152.269537,
  *     button_pressed=False,
- *     points =[
- *       TouchPoint(tid=13, slot=0, syn_time=1420522152.269537, x=440, y=277,
- *                 pressure=33),
- *       TouchPoint(tid=14, slot=1, syn_time=1420522152.269537, x=271, y=308,
- *                 pressure=38)
+ *     fingers =[
+ *       MtFinger(tid=13, slot=0, syn_time=1420522152.269537, x=440, y=277,
+ *                pressure=33),
+ *       MtFinger(tid=14, slot=1, syn_time=1420522152.269537, x=271, y=308,
+ *                pressure=38)
  *     ]
  *   )
  */
 Webplot.prototype.processSnapshot = function(snapshot) {
   var edge = this.clickEdge;
 
-  for (var i = 0; i < snapshot.points.length; i++) {
-    var finger = snapshot.points[i];
+  for (var i = 0; i < snapshot.fingers.length; i++) {
+    var finger = snapshot.fingers[i];
 
     // Update the color object if the finger is leaving.
     if (finger.leaving) {
@@ -269,7 +269,7 @@
   // In some special situation, the click comes with no fingers.
   // This may happen if an insulated object is used to click the touchpad.
   // Just draw the click at a random position.
-  if (snapshot.points.length == 0 && snapshot.button_pressed == 1 &&
+  if (snapshot.fingers.length == 0 && snapshot.button_pressed == 1 &&
       !this.clickDown) {
     var x = Math.random() * this.canvas.innerWidth +
             this.canvas.innerOffsetLeft;
diff --git a/webplot/webplot.py b/webplot/webplot.py
index f1115b8..c084d9c 100755
--- a/webplot/webplot.py
+++ b/webplot/webplot.py
@@ -439,10 +439,10 @@
       MtSnapshot(
           syn_time=1420524008.368854,
           button_pressed=False,
-          points=[
-              TouchPoint(tid=162, slot=0, syn_time=1420524008.368854, x=524,
+          fingers=[
+              MtFinger(tid=162, slot=0, syn_time=1420524008.368854, x=524,
                         y=231, pressure=45, tilt_x=0, tilt_y=0),
-              TouchPoint(tid=163, slot=1, syn_time=1420524008.368854, x=677,
+              MtFinger(tid=163, slot=1, syn_time=1420524008.368854, x=677,
                         y=135, pressure=57, tilt_x=0, tilt_y=0)
           ]
       )
@@ -455,16 +455,16 @@
     # Convert MtSnapshot.
     converted = dict(snapshot.__dict__.items())
 
-    # Convert TouchPoint.
-    converted['points'] = [dict(point.__dict__.items())
-                            for point in converted['points']]
+    # Convert MtFinger.
+    converted['fingers'] = [dict(finger.__dict__.items())
+                            for finger in converted['fingers']]
     converted['raw_events'] = [str(event) for event in converted['raw_events']]
 
     # Add leaving fingers to notify js for reclaiming the finger colors.
-    curr_tids = [finger['tid'] for finger in converted['points']]
+    curr_tids = [finger['tid'] for finger in converted['fingers']]
     for tid in set(self._prev_tids) - set(curr_tids):
       leaving_finger = {'tid': tid, 'leaving': True}
-      converted['points'].append(leaving_finger)
+      converted['fingers'].append(leaving_finger)
     self._prev_tids = curr_tids
 
     # Convert raw events from a list of classes to a list of its strings