CC Animation: Make cc/animation an independent GN component.

cc/animation/scroll_offset_animations_impl.h

Index: cc/animation/scroll_offset_animations_impl.h
diff --git a/cc/animation/scroll_offset_animations_impl.h b/cc/animation/scroll_offset_animations_impl.h
index 4db6005745701398fdaa122136b531f223f387b2..e5e5d72578693eeff416c53a3ec24a0e98533ef8 100644
--- a/cc/animation/scroll_offset_animations_impl.h
+++ b/cc/animation/scroll_offset_animations_impl.h
@@ -25,7 +25,8 @@ class ElementAnimations;
 // We have just one player for impl-only scroll offset animations. I.e. only
 // one element can have an impl-only scroll offset animation at any given time.
 // Note that this class only exists on the compositor thread.
-class CC_EXPORT ScrollOffsetAnimationsImpl : public AnimationDelegate {
+class CC_ANIMATION_EXPORT ScrollOffsetAnimationsImpl
+    : public AnimationDelegate {
  public:
   explicit ScrollOffsetAnimationsImpl(AnimationHost* animation_host);