Remove stale comment regarding StringKeyframe being eagerly evaluated.

third_party/WebKit/Source/core/animation/CompositorAnimations.cpp

Index: third_party/WebKit/Source/core/animation/CompositorAnimations.cpp
diff --git a/third_party/WebKit/Source/core/animation/CompositorAnimations.cpp b/third_party/WebKit/Source/core/animation/CompositorAnimations.cpp
index 745fd620199c57ab0c31cec2bb904454bd76217c..27d47d07a2aed0353a0f1ebf334a6bc1e46cab6f 100644
--- a/third_party/WebKit/Source/core/animation/CompositorAnimations.cpp
+++ b/third_party/WebKit/Source/core/animation/CompositorAnimations.cpp
@@ -527,11 +527,7 @@ void addKeyframesToCurve(
     else
       keyframeTimingFunction = &keyframe->easing();
 
-    // FIXME: This relies on StringKeyframes being eagerly evaluated, which will
-    // not happen eventually. Instead we should extract the CSSValue here
-    // and convert using another set of toAnimatableXXXOperations functions.
     const AnimatableValue* value = keyframe->getAnimatableValue().get();
-
     addKeyframeToCurve(curve, keyframe.get(), value, *keyframeTimingFunction);
   }
 }