Removed old media-internals page and rewrote it.

content/browser/resources/media/painters/propertyPainter.js

+var propertyPainter = (function () {
+    "use strict";
+
+    var propPainter = {};
+
+    propPainter.paintNew = function (playerInfo, div) {
+        removeChildren(div);
+        var table = makeTable("Key", "Value", "Timestamp");
+
+        goog.object.forEach(playerInfo.properties, function (element, index) {
+            var pastValues = playerInfo.pastValues[index];
+            var lastValue = pastValues[pastValues.length - 1];
+            var time = goog.time.millisToString(lastValue.time);
+
+            var row = genRow([index, element, time]);
+
+            appendRow(table, row);
+        });
+        div.appendChild(table);
+    };
+
+    propPainter.paintExist = propPainter.paintNew;
+
+
+    propPainter.invalidate = function () {
+        // Do nothing
+    };
+
+    return propPainter;
+}());