Make EventHandler::ActiveIntervalTimer mockable.

LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html

Index: LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html
diff --git a/LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html b/LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html
index 63c2dbe99d726a9075f6fd5788cf37dcc3a4efd2..d91c1cf115ddb2925da1c3c39ba096b9c8dea294 100644
--- a/LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html
+++ b/LayoutTests/fast/events/touch/gesture/gesture-tap-active-state.html
@@ -52,11 +52,13 @@ function runTests()
         return;
     }
 
-    if (window.testRunner) {
-        window.jsTestIsAsync = true;
-        testRunner.waitUntilDone();
+    if (!internals.fireActiveIntervalTimer) {
+        debug('Mocked timers are not supported by this platform');
+        return;
     }
 
+    internals.suspendActiveIntervalTimer(document);
+
     debug("Verify active isn't initially set");
     shouldBeFalse("isBoxActive()");
 
@@ -64,17 +66,8 @@ function runTests()
     eventSender.gestureShowPress(50, 50);
     shouldBeTrue("isBoxActive()");
     eventSender.gestureTap(50, 50);
-    // FIXME: Enable after implementing mocked timers (http://crbug.com/319529)
-    // shouldBeTrue("isBoxActive()");
-    waitUntilActiveCleared();
-}
-
-function waitUntilActiveCleared()
-{
-    if (isBoxActive()) {
-        return setTimeout(waitUntilActiveCleared, 10);
-    }
-
+    shouldBeTrue("isBoxActive()");
+    internals.fireActiveIntervalTimer(document);
     shouldBeFalse("isBoxActive()");
 
     debug("Verify tapdown,tapcancel on the element sets and clears active");
@@ -87,16 +80,7 @@ function waitUntilActiveCleared()
     eventSender.gestureShowPress(50, 50);
     shouldBeTrue("isBoxActive()");
     eventSender.gestureTap(400, 250);
-    // FIXME: Remove after mocked timers added  (http://crbug.com/319529)
-    waitUntilAnotherActiveCleared();
-}
-
-function waitUntilAnotherActiveCleared()
-{
-    if (isBoxActive()) {
-        return setTimeout(waitUntilAnotherActiveCleared, 10);
-    }
-
+    internals.fireActiveIntervalTimer(document);
     shouldBeFalse("isBoxActive()");
 
     debug("Verify tapCancel elsewhere still clears active");
@@ -121,8 +105,6 @@ function waitUntilAnotherActiveCleared()
     eventSender.releaseTouchPoint(0);
     eventSender.touchEnd();
     shouldBeTrue("isBoxActive()");
-
-    finishJSTest();
 }
 
 runTests();