Prepare animation-effect-timing-easing for upstreaming

third_party/WebKit/LayoutTests/web-animations-api/animation-effect-timing-easing-expected.txt

Index: third_party/WebKit/LayoutTests/web-animations-api/animation-effect-timing-easing-expected.txt
diff --git a/third_party/WebKit/LayoutTests/web-animations-api/animation-effect-timing-easing-expected.txt b/third_party/WebKit/LayoutTests/web-animations-api/animation-effect-timing-easing-expected.txt
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@@ -0,0 +1,8 @@
+CONSOLE WARNING: line 9: Specifying animation easing as a function is deprecated and all support will be removed in M54, around October 2016, at which point this will throw a TypeError. This warning may have been triggered by the Web Animations or Polymer polyfills. See http://crbug.com/601672 for details.
+This is a testharness.js-based test.
+PASS Valid easing functions should come out the same as they went in 
+PASS steps easing second parameter defaults to end 
+PASS Should accept arbitrary casing and escape chararcters 
+FAIL Invalid easing values should throw a TypeError assert_throws: with inputEasing='function (a){return a}' function "function () { animate_with_easing(inputEasing); }" did not throw
+Harness: the test ran to completion.
+