Convert Devtools protocol Input timestamp to monotonic clock

third_party/WebKit/LayoutTests/inspector-protocol/input/eventTimestamp.html

+<script type="text/javascript" src="../../http/tests/inspector-protocol/inspector-protocol-test.js"></script>
+<script>
+    window.addEventListener("keydown", logEvent);

[dgozman, 2016/03/09 17:08:21]

style: no indentation in <script> tag

[majidvp, 2016/03/09 20:09:08]

Done.

+    window.addEventListener("mousedown", logEvent);
+    window.addEventListener("touchstart", logEvent);
+
+    var receivedTimestamps = [];
+
+    function logEvent(event) {

[dgozman, 2016/03/09 17:08:21]

style: { on next line for function body

[majidvp, 2016/03/09 20:09:08]

Done.

+        log("-----Event-----");
+        log("type: " + event.type);
+        receivedTimestamps.push(event.timeStamp);
+    }
+
+    function verifyTimestamps() {
+        log("-----Verify-----");
+        log("Received " + receivedTimestamps.length + " timestamps");
+
+        // Event.timeStamp values are in milliseconds
+        var expectedOffsets = [0, 5000, 10000, 15000, 20000, 25000];
+        var receivedOffsets = receivedTimestamps.map(function(timestamp) {
+            return timestamp - receivedTimestamps[0];
+        });
+        for (var i = 0; i < receivedOffsets.length; ++i) {
+            if (isNear(receivedOffsets[i], expectedOffsets[i]))
+                log("timeStamps offsets is as expected.");
+            else
+                log("timeStamp offset is expected " + expectedOffsets[i] + " but it is:" + receivedOffsets[i]);
+        }
+
+        function isNear(a, b) {
+            var epsilon = 0.01;
+            return Math.abs(b - a) < epsilon;
+        }
+
+    }
+
+    function test() {
+        // We send epoch timestamp but expect to receive high-res timestamps
+        var baseEpochTimestamp = Date.now() / 1000; // in seconds
+        var sentTimestamps = [0, 5, 10, 15, 20, 25].map(function(offset) {
+            return baseEpochTimestamp + offset;
+        });
+
+        var commands = [{
+            value: "Input.dispatchKeyEvent",
+            event: {
+                "type": "rawKeyDown",
+                "timestamp": sentTimestamps[0]
+            }
+        }, {
+            value: "Input.dispatchKeyEvent",
+            event: {
+                "type": "rawKeyDown",
+                "timestamp": sentTimestamps[1]
+            }
+        }, {
+            value: "Input.dispatchMouseEvent",
+            event: {
+                "type": "mousePressed",
+                "timestamp": sentTimestamps[2],
+                "button": "left",
+                "clickCount": 1,
+                "x": 100,
+                "y": 200
+            }
+        }, {
+            value: "Input.dispatchMouseEvent",
+            event: {
+                "type": "mousePressed",
+                "timestamp": sentTimestamps[3],
+                "button": "left",
+                "clickCount": 1,
+                "x": 100,
+                "y": 200
+            }
+        }, {
+            value: "Input.dispatchTouchEvent",
+            event: {
+                "type": "touchStart",
+                "timestamp": sentTimestamps[4],
+                "touchPoints": [{
+                    "state": "touchPressed",
+                    "x": 100,
+                    "y": 200
+                }]
+            }
+        }, {
+            value: "Input.dispatchTouchEvent",
+            event: {
+                "type": "touchStart",
+                "timestamp": sentTimestamps[5],
+                "touchPoints": [{
+                    "state": "touchPressed",
+                    "x": 100,
+                    "y": 100
+                }]
+
+            }
+        }];
+
+        for (var i = 0; i < commands.length; i++)
+            InspectorTest.sendCommand(commands[i].value, commands[i].event, checkResponse.bind(undefined, i == commands.length - 1));
+
+        function checkResponse(isLastCommand, msg) {
+            if (msg.error)
+                InspectorTest.log("Error: " + msg.error.message);
+            if (isLastCommand) {
+                InspectorTest.sendCommandOrDie("Runtime.evaluate", {
+                    expression: 'verifyTimestamps()'
+                });
+                InspectorTest.completeTest();

[dgozman, 2016/03/09 17:08:21]

You have to wait for Runtime.evaluate to finish before completing test (do it in
a callback).

[majidvp, 2016/03/09 20:09:08]

Done.

+            }
+        }
+    }
+</script>
+
+<body onload="runTest()">
+</body>