Devtools Animations: Update transition timing on timeline interaction

Source/devtools/front_end/elements/AnimationTimeline.js

Index: Source/devtools/front_end/elements/AnimationTimeline.js
diff --git a/Source/devtools/front_end/elements/AnimationTimeline.js b/Source/devtools/front_end/elements/AnimationTimeline.js
index 56eb22b64b19cb55e394e2facaf6378f597d01c9..818241e2937b5145d0c038575cac9bc58c25fb6a 100644
--- a/Source/devtools/front_end/elements/AnimationTimeline.js
+++ b/Source/devtools/front_end/elements/AnimationTimeline.js
@@ -786,11 +786,10 @@ WebInspector.AnimationUI.prototype = {
             var duration = this._duration();
             this._setDelay(delay);
             this._setDuration(duration);
-            // FIXME: Transition timing updates currently not supported
-            if (this._animation.type() == "WebAnimation") {
+            if (this._animation.type() !== "CSSAnimation") {

[dgozman, 2015/03/30 10:38:58]

What about CSSAnimation? Should you leave the FIXME?

[samli, 2015/03/30 23:14:17]

No, CSS animations are already supported in http://crrev.com/895783004. The
inline style is updated and changes are automatically detected by the animations
engine. Transitions are not spec-ed in the same manner which is why we need to
update it in this manner.

                 var target = WebInspector.targetManager.mainTarget();
                 if (target)
-                    target.animationAgent().setTiming(this._animation.id(), duration, delay);
+                    target.animationAgent().setTiming(this._animation.id(), duration, delay, this._animation.type() === "CSSTransition");
             }
         }