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 9d29cdd72f482b2d6593c11b635e193d724cd619..e6d402f925c36dd9490903c39d83f5e77df8da02 100644
--- a/cc/animation/scroll_offset_animations_impl.h
+++ b/cc/animation/scroll_offset_animations_impl.h
@@ -24,7 +24,8 @@ class AnimationTimeline;
 // 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);