From 0a98623abb85bdce079b400ed3bf3d87ddc6b1da Mon Sep 17 00:00:00 2001
From: Oleg Gaidarenko <markelog@gmail.com>
Date: Fri, 13 Nov 2015 20:00:39 +0300
Subject: [PATCH] Effects: manually revert two `requestAnimationFrame` commits

72119e0023dcc0d9807caf6d988598b74abdc937 and bbdfbb4ee859fe9319b348d88120ddc2c9efbd63
---
 src/effects.js       | 28 ++++------------------------
 test/unit/effects.js | 33 ---------------------------------
 2 files changed, 4 insertions(+), 57 deletions(-)

diff --git a/src/effects.js b/src/effects.js
index ab6fe6d79..d8997f4be 100644
--- a/src/effects.js
+++ b/src/effects.js
@@ -23,13 +23,6 @@ var
 	rfxtypes = /^(?:toggle|show|hide)$/,
 	rrun = /queueHooks$/;
 
-function raf() {
-	if ( timerId ) {
-		window.requestAnimationFrame( raf );
-		jQuery.fx.tick();
-	}
-}
-
 // Animations created synchronously will run synchronously
 function createFxNow() {
 	window.setTimeout( function() {
@@ -408,15 +401,8 @@ jQuery.speed = function( speed, easing, fn ) {
 		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
 	};
 
-	// Go to the end state if fx are off or if document is hidden
-	if ( jQuery.fx.off || document.hidden ) {
-		opt.duration = 0;
-
-	} else {
-		opt.duration = typeof opt.duration === "number" ?
-			opt.duration : opt.duration in jQuery.fx.speeds ?
-				jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
-	}
+	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
+		opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
 
 	// Normalize opt.queue - true/undefined/null -> "fx"
 	if ( opt.queue == null || opt.queue === true ) {
@@ -620,18 +606,12 @@ jQuery.fx.timer = function( timer ) {
 jQuery.fx.interval = 13;
 jQuery.fx.start = function() {
 	if ( !timerId ) {
-		timerId = window.requestAnimationFrame ?
-			window.requestAnimationFrame( raf ) :
-			window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
+		timerId = window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
 	}
 };
 
 jQuery.fx.stop = function() {
-	if ( window.cancelAnimationFrame ) {
-		window.cancelAnimationFrame( timerId );
-	} else {
-		window.clearInterval( timerId );
-	}
+	window.clearInterval( timerId );
 
 	timerId = null;
 };
diff --git a/test/unit/effects.js b/test/unit/effects.js
index 20b15a1ca..8d5b2b485 100644
--- a/test/unit/effects.js
+++ b/test/unit/effects.js
@@ -5,11 +5,8 @@ if ( !jQuery.fx ) {
 	return;
 }
 
-var oldRaf = window.requestAnimationFrame;
-
 QUnit.module( "effects", {
 	setup: function() {
-		window.requestAnimationFrame = null;
 		this.sandbox = sinon.sandbox.create();
 		this.clock = this.sandbox.useFakeTimers( 505877050 );
 		this._oldInterval = jQuery.fx.interval;
@@ -22,7 +19,6 @@ QUnit.module( "effects", {
 		jQuery.now = Date.now;
 		jQuery.fx.stop();
 		jQuery.fx.interval = this._oldInterval;
-		window.requestAnimationFrame = oldRaf;
 		return moduleTeardown.apply( this, arguments );
 	}
 } );
@@ -2317,35 +2313,6 @@ QUnit.test( "Respect display value on inline elements (#14824)", function( asser
 	clock.tick( 800 );
 } );
 
-QUnit.test( "Animation should go to its end state if document.hidden = true", function( assert ) {
-	assert.expect( 1 );
-
-	var height;
-	if ( Object.defineProperty ) {
-
-		// Can't rewrite document.hidden property if its host property
-		try {
-			Object.defineProperty( document, "hidden", {
-				get: function() {
-					return true;
-				}
-			} );
-		} catch ( e ) {}
-	} else {
-		document.hidden = true;
-	}
-
-	if ( document.hidden ) {
-		height = jQuery( "#qunit-fixture" ).animate( { height: 500 } ).height();
-
-		assert.equal( height, 500, "Animation should happen immediately if document.hidden = true" );
-		jQuery( document ).removeProp( "hidden" );
-
-	} else {
-		assert.ok( true, "Can't run the test since we can't reproduce correct environment for it" );
-	}
-} );
-
 QUnit.test( "jQuery.easing._default (gh-2218)", function( assert ) {
 	assert.expect( 2 );
 
-- 
2.39.5