Add time stamp to the constructor of the events

To match the pointerevent and its corresponding
mouse and touch events time stamps we need to
have the time stamp in the constructor parameter.

Note that having the time stamp in the EventInit
dictionary is being debated as part of this issue:
whatwg/dom#76

BUG=710442

Review-Url: https://codereview.chromium.org/2834183002
Cr-Commit-Position: refs/heads/master@{#466690}

pointerevents/extension/pointerevent_coalesced_events_attributes-manual.html

@@ -77,8 +77,14 @@
                               test (function() {
                                 for (var i=0; i<coalescedEvents.length; i++) {
                                   assert_equals(coalescedEvents[i].isTrusted, true, 'isTrusted flag should be true for coalesced events.');
+                                  if (i > 0)
+                                    assert_greater_than_equal(coalescedEvents[i].timeStamp, coalescedEvents[i-1].timeStamp, 'Time stamps of coalesced events must be ascending.');
                                 }
                               }, expectedPointerType + ' pointermove coalesced events should all be marked as trusted.');
+                              test (function() {
+                                for (var i=1; i<coalescedEvents.length; i++)
+                                  assert_greater_than_equal(coalescedEvents[i].timeStamp, coalescedEvents[i-1].timeStamp, 'Time stamps of coalesced events must be ascending.');
+                              }, expectedPointerType + ' time stamps of coalesced events must be ascending.');
                               test (function() {
                                 for (var i=0; i<coalescedEvents.length; i++) {
                                   assert_equals(coalescedEvents[i].bubbles, false, 'Bubbles attribute should be false for coalesced events.');

pointerevents/pointerevent_suppress_compat_events_on_drag_mouse-manual.html

@@ -41,8 +41,9 @@
           on_event(document.getElementById("done"), "click", end_of_interaction);
 
           var target_list = ["target0", "target1"];
-          var pointer_event_list = ["pointerdown"];
+          var pointer_event_list = ["pointerdown" , "pointermove", "pointerup"];
           var mouse_event_list = ["mousedown", "mouseup", "mousemove"];
+          var last_pointer_event = null;
 
           target_list.forEach(function(targetId) {
               var target = document.getElementById(targetId);
@@ -52,12 +53,16 @@
                       detected_pointertypes[event.pointerType] = true;
                       var label = event.type + "@" + targetId;
 
-                      test(function () {
-                          assert_true(event.isPrimary);
-                      }, "primary pointer " + label);
+                      if (event.type == "pointerdown") {
+                          test(function () {
+                              assert_true(event.isPrimary);
+                          }, "primary pointer " + label);
+                      }
 
                       if (label === "pointerdown@target0")
                           event.preventDefault();
+
+                      last_pointer_event = event;
                   });
               });
 
@@ -69,6 +74,11 @@
                       event_log.push(event.type + "@" + targetId);
 
                       include_next_mousemove = (event.type == "mousedown");
+                      test(function() {
+                          test(function () {
+                              assert_equals(event.timeStamp, last_pointer_event.timeStamp, "The time stamp of the compat mouse event should be the same as its pointerevent");
+                          });
+                      }, event.type + "'s time stamp should be the same as " + last_pointer_event.type + "'s time stamp.");
                   });
               });
           });