diff --git a/devtools/client/animationinspector/test/doc_multiple_animation_types.html b/devtools/client/animationinspector/test/doc_multiple_animation_types.html
index 3233e8d6b40..7dedab27aa1 100644
--- a/devtools/client/animationinspector/test/doc_multiple_animation_types.html
+++ b/devtools/client/animationinspector/test/doc_multiple_animation_types.html
@@ -48,13 +48,13 @@
       document.querySelector(".css-transition").style.backgroundColor = "yellow";
     }, 0);
 
-    document.querySelector(".script-animation").animate([
-      {opacity: 1, offset: 0},
-      {opacity: .1, offset: 1}
-    ], {
-      duration: 10000,
-      fill: "forwards"
-    });
+    // Element.animate() is disabled in Firefox 47, so do it the long way.
+    let effect = new KeyframeEffect(document.querySelector(".script-animation"),
+                                    [ { opacity: 1, offset: 0 },
+                                      { opacity: .1, offset: 1 } ],
+                                      { duration: 10000, fill: "forwards" });
+    let animation = new Animation(effect, document.timeline);
+    animation.play();
   </script>
 </body>
 </html>
diff --git a/dom/animation/test/chrome.ini b/dom/animation/test/chrome.ini
index ab725257ec0..1ae7c74d7a2 100644
--- a/dom/animation/test/chrome.ini
+++ b/dom/animation/test/chrome.ini
@@ -3,11 +3,7 @@ support-files =
   testcommon.js
   ../../imptests/testharness.js
   ../../imptests/testharnessreport.js
-[chrome/test_animate_xrays.html]
-# file_animate_xrays.html needs to go in mochitest.ini since it is served
-# over HTTP
 [chrome/test_animation_observers.html]
-[chrome/test_animation_property_state.html]
 [chrome/test_restyles.html]
 [chrome/test_running_on_compositor.html]
 skip-if = buildapp == 'b2g'
diff --git a/dom/animation/test/chrome/test_animation_observers.html b/dom/animation/test/chrome/test_animation_observers.html
index d914c0a3a60..a1a1501e21b 100644
--- a/dom/animation/test/chrome/test_animation_observers.html
+++ b/dom/animation/test/chrome/test_animation_observers.html
@@ -1470,47 +1470,6 @@ addAsyncAnimTest("tree_ordering", { observe: div, subtree: true }, function*() {
   childB.remove();
 });
 
-
-addAsyncAnimTest("change_duration_and_currenttime",
-                 { observe: div, subtree: true }, function*() {
-  var anim = div.animate({ opacity: [ 0, 1 ] }, 100000);
-  yield await_frame();
-  assert_records([{ added: [anim], changed: [], removed: [] }],
-                 "records after animation is added");
-
-  anim.effect.timing.duration = 10000;
-  yield await_frame();
-
-  assert_records([{ added: [], changed: [anim], removed: [] }],
-                 "records after duration is changed");
-
-  anim.effect.timing.duration = 10000;
-  yield await_frame();
-  assert_records([], "records after assigning same value");
-
-  anim.currentTime = 50000;
-  yield await_frame();
-  assert_records([{ added: [], changed: [], removed: [anim] }],
-                 "records after animation end");
-
-  anim.effect.timing.duration = 100000;
-  yield await_frame();
-  assert_records([{ added: [anim], changed: [], removed: [] }],
-                 "records after animation restarted");
-
-  anim.effect.timing.duration = "auto";
-  yield await_frame();
-  assert_records([{ added: [], changed: [], removed: [anim] }],
-                 "records after duration set \"auto\"");
-
-  anim.effect.timing.duration = "auto";
-  yield await_frame();
-  assert_records([], "records after assigning same value \"auto\"");
-
-  anim.cancel();
-  yield await_frame();
-});
-
 // Run the tests.
 SimpleTest.requestLongerTimeout(2);
 SimpleTest.waitForExplicitFinish();
diff --git a/dom/animation/test/chrome/test_restyles.html b/dom/animation/test/chrome/test_restyles.html
index f4da0cd4ea5..3ee48f7c579 100644
--- a/dom/animation/test/chrome/test_restyles.html
+++ b/dom/animation/test/chrome/test_restyles.html
@@ -345,27 +345,6 @@ waitForAllPaints(function() {
        'update style when currentTime is set to middle of duration time');
     yield ensureElementRemoval(div);
   });
-
-  add_task_if_omta_enabled(function* change_duration_and_currenttime() {
-    var div = addDiv(null);
-    var animation = div.animate({ opacity: [ 0, 1 ] }, 10000);
-
-    yield animation.ready;
-    ok(animation.isRunningOnCompositor);
-
-    animation.currentTime = 50000;
-
-    ok(!animation.isRunningOnCompositor);
-
-    animation.effect.timing.duration = 100000;
-    var markers = yield observeStyling(5);
-    is(markers.length, 1,
-       'Animations running on the compositor should update style' +
-       'when timing.duration is made longer than the current time');
-
-    yield ensureElementRemoval(div);
-  });
-
 });
 
 </script>
diff --git a/dom/animation/test/chrome/test_running_on_compositor.html b/dom/animation/test/chrome/test_running_on_compositor.html
index 75edff3641e..3a6e1962dbf 100644
--- a/dom/animation/test/chrome/test_running_on_compositor.html
+++ b/dom/animation/test/chrome/test_running_on_compositor.html
@@ -285,48 +285,6 @@ promise_test(function(t) {
 }, 'isRunningOnCompositor is true when a property that would otherwise block ' +
    'running on the compositor is overridden in the CSS cascade');
 
-promise_test(function(t) {
-  var div = addDiv(t);
-  var animation = div.animate({ opacity: [ 0, 1 ] }, 100000);
-
-  return animation.ready.then(t.step_func(function() {
-    assert_equals(animation.isRunningOnCompositor, omtaEnabled,
-      'Animation reports that it is running on the compositor');
-
-    animation.currentTime = 50000;
-    animation.effect.timing.duration = 10000;
-
-    assert_equals(animation.isRunningOnCompositor, false,
-       'Animation reports that it is NOT running on the compositor'
-       + ' when the animation is set a shorter duration than current time');
-  }));
-}, 'animation is immediately removed from compositor' +
-   'when timing.duration is made shorter than the current time');
-
-promise_test(function(t) {
-  var div = addDiv(t);
-  var animation = div.animate({ opacity: [ 0, 1 ] }, 10000);
-
-  return animation.ready.then(t.step_func(function() {
-    assert_equals(animation.isRunningOnCompositor, omtaEnabled,
-      'Animation reports that it is running on the compositor');
-
-    animation.currentTime = 50000;
-
-    assert_equals(animation.isRunningOnCompositor, false,
-      'Animation reports that it is NOT running on the compositor'
-      + ' when finished');
-
-    animation.effect.timing.duration = 100000;
-    return waitForFrame();
-  })).then(t.step_func(function() {
-    assert_equals(animation.isRunningOnCompositor, omtaEnabled,
-      'Animation reports that it is running on the compositor'
-      + ' when restarted');
-  }));
-}, 'animation is added to compositor' +
-   ' when timing.duration is made longer than the current time');
-
 </script>
 </script>
 </body>
diff --git a/dom/animation/test/crashtests/crashtests.list b/dom/animation/test/crashtests/crashtests.list
index 7a09222d730..7b714fa9d7f 100644
--- a/dom/animation/test/crashtests/crashtests.list
+++ b/dom/animation/test/crashtests/crashtests.list
@@ -1,5 +1,4 @@
 pref(dom.animations-api.core.enabled,true) load 1239889-1.html
-pref(dom.animations-api.core.enabled,true) load 1244595-1.html
 pref(dom.animations-api.core.enabled,true) load 1216842-1.html
 pref(dom.animations-api.core.enabled,true) load 1216842-2.html
 pref(dom.animations-api.core.enabled,true) load 1216842-3.html
diff --git a/dom/webidl/Animatable.webidl b/dom/webidl/Animatable.webidl
index f1e0a5564f2..1abfaed031e 100644
--- a/dom/webidl/Animatable.webidl
+++ b/dom/webidl/Animatable.webidl
@@ -16,7 +16,8 @@ dictionary KeyframeAnimationOptions : KeyframeEffectOptions {
 
 [NoInterfaceObject]
 interface Animatable {
-  [Func="nsDocument::IsWebAnimationsEnabled", Throws]
+  // Bug 1253507: Disabled in Firefox 47 branch
+  [ChromeOnly, Throws]
   Animation animate(object? frames,
                     optional (unrestricted double or KeyframeAnimationOptions)
                       options);
diff --git a/layout/reftests/web-animations/reftest.list b/layout/reftests/web-animations/reftest.list
index 35fbb1f9e69..e69de29bb2d 100644
--- a/layout/reftests/web-animations/reftest.list
+++ b/layout/reftests/web-animations/reftest.list
@@ -1 +0,0 @@
-test-pref(dom.animations-api.core.enabled,true) == 1246046-1.html green-box.html
diff --git a/layout/style/test/mochitest.ini b/layout/style/test/mochitest.ini
index e168558ecbf..b27947f22ff 100644
--- a/layout/style/test/mochitest.ini
+++ b/layout/style/test/mochitest.ini
@@ -42,11 +42,7 @@ skip-if = toolkit == 'android'
 [test_animations_async_tests.html]
 support-files = ../../reftests/fonts/Ahem.ttf file_animations_async_tests.html
 [test_animations_dynamic_changes.html]
-[test_animations_effect_timing_duration.html]
-support-files = file_animations_effect_timing_duration.html
 [test_animations_event_order.html]
-[test_animations_iterationstart.html]
-support-files = file_animations_iterationstart.html
 [test_animations_omta.html]
 [test_animations_omta_start.html]
 skip-if = (buildapp == 'b2g' && toolkit != 'gonk') # bug 1041017
diff --git a/testing/web-platform/meta/web-animations/animatable/__dir__.ini b/testing/web-platform/meta/web-animations/animatable/__dir__.ini
new file mode 100644
index 00000000000..7dd8cfc2c29
--- /dev/null
+++ b/testing/web-platform/meta/web-animations/animatable/__dir__.ini
@@ -0,0 +1 @@
+disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/animation-effect-timing/duration.html.ini b/testing/web-platform/meta/web-animations/animation-effect-timing/duration.html.ini
index fb86a38a634..89c71706e40 100644
--- a/testing/web-platform/meta/web-animations/animation-effect-timing/duration.html.ini
+++ b/testing/web-platform/meta/web-animations/animation-effect-timing/duration.html.ini
@@ -1,18 +1,3 @@
 [duration.html]
   type: testharness
-  [set duration auto]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1237173
-
-  [set duration -100]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1237173
-
-  [set duration abc]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1237173
-
-  [set duration string 100]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1237173
-
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/animation-effect-timing/getAnimations.html.ini b/testing/web-platform/meta/web-animations/animation-effect-timing/getAnimations.html.ini
new file mode 100644
index 00000000000..7f6600bc947
--- /dev/null
+++ b/testing/web-platform/meta/web-animations/animation-effect-timing/getAnimations.html.ini
@@ -0,0 +1,3 @@
+[getAnimations.html]
+  type: testharness
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/animation-effect-timing/getComputedStyle.html.ini b/testing/web-platform/meta/web-animations/animation-effect-timing/getComputedStyle.html.ini
new file mode 100644
index 00000000000..43d6ce50dc6
--- /dev/null
+++ b/testing/web-platform/meta/web-animations/animation-effect-timing/getComputedStyle.html.ini
@@ -0,0 +1,3 @@
+[getComputedStyle.html]
+  type: testharness
+  disabled: bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/keyframe-effect/effect-easing.html.ini b/testing/web-platform/meta/web-animations/keyframe-effect/effect-easing.html.ini
index efb1388e29d..4a76111dba8 100644
--- a/testing/web-platform/meta/web-animations/keyframe-effect/effect-easing.html.ini
+++ b/testing/web-platform/meta/web-animations/keyframe-effect/effect-easing.html.ini
@@ -1,14 +1,3 @@
 [effect-easing.html]
   type: testharness
-  [steps(start) function]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1248532
-
-  [effect easing produces values greater than 1 with step-start keyframe]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1248532
-
-  [effect easing produces negative values with step-start keyframe]
-    expected: FAIL
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1248532
-
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-currentIteration.html.ini b/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-currentIteration.html.ini
new file mode 100644
index 00000000000..b98efc13658
--- /dev/null
+++ b/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-currentIteration.html.ini
@@ -0,0 +1,3 @@
+[getComputedTiming-currentIteration.html]
+  type: testharness
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748
diff --git a/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-progress.html.ini b/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-progress.html.ini
new file mode 100644
index 00000000000..9f18d6c7ce3
--- /dev/null
+++ b/testing/web-platform/meta/web-animations/keyframe-effect/getComputedTiming-progress.html.ini
@@ -0,0 +1,3 @@
+[getComputedTiming-progress.html]
+  type: testharness
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1245748