Add execution time elapsed to JsApiReporter

Since this information is desired in ConsoleReporter, HtmlReporter,
and now JsApiReporter, the executionTime is passed through in
jasmineDone from Env instead of making each reporter compute it.

Fixes #30, [Finishes #45659879]

src/html/HtmlReporter.js

@@ -2,11 +2,10 @@ jasmineRequire.HtmlReporter = function() {
   function HtmlReporter(options) {
     var env = options.env || {},
       getContainer = options.getContainer,
-      now = options.now || function() { return new Date().getTime();},
       createElement = options.createElement,
       createTextNode = options.createTextNode,
+      onRaiseExceptionsClick = options.onRaiseExceptionsClick,
       results = [],
-      startTime,
       specsExecuted = 0,
       failureCount = 0,
       pendingSpecCount = 0,
@@ -33,7 +32,6 @@ jasmineRequire.HtmlReporter = function() {
     var totalSpecsDefined;
     this.jasmineStarted = function(options) {
       totalSpecsDefined = options.totalSpecsDefined || 0;
-      startTime = now();
     };
 
     var summary = createDom("div", {className: "summary"});
@@ -94,11 +92,9 @@ jasmineRequire.HtmlReporter = function() {
       }
     };
 
-    this.jasmineDone = function() {
-      var elapsed = now() - startTime;
-
+    this.jasmineDone = function(options) {
       var banner = find(".banner");
-      banner.appendChild(createDom("span", {className: "duration"}, "finished in " + elapsed / 1000 + "s"));
+      banner.appendChild(createDom("span", {className: "duration"}, "finished in " + options.executionTime / 1000 + "s"));
 
       var alert = find(".alert");
 
@@ -113,7 +109,7 @@ jasmineRequire.HtmlReporter = function() {
       var checkbox = find("input");
 
       checkbox.checked = !env.catchingExceptions();
-      checkbox.onclick = options.onRaiseExceptionsClick;
+      checkbox.onclick = onRaiseExceptionsClick;
 
       if (specsExecuted < totalSpecsDefined) {
         var skippedMessage = "Ran " + specsExecuted + " of " + totalSpecsDefined + " specs - run all";