Move animation update to follow paint phase for SPv2.

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 5c587b2da1219ae46817e60a9c7ed7da00919e99..3469e0672e34f77a9244fd57f14496ebe0874d7d 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -3058,9 +3058,6 @@ void FrameView::updateLifecyclePhasesInternal(
         prePaint();
     }
 
-    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
-      DocumentAnimations::updateAnimations(layoutView()->document());
-
     if (targetState == DocumentLifecycle::PaintClean) {
       if (!m_frame->document()->printing() ||
           RuntimeEnabledFeatures::printBrowserEnabled())
@@ -3073,6 +3070,11 @@ void FrameView::updateLifecyclePhasesInternal(
       DCHECK((m_frame->document()->printing() &&
               lifecycle().state() == DocumentLifecycle::PrePaintClean) ||
              lifecycle().state() == DocumentLifecycle::PaintClean);
+
+      if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
+        DocumentAnimations::updateAnimations(layoutView()->document(),
+                                             DocumentLifecycle::PaintClean);
+      }
     }
 
     forAllNonThrottledFrameViews([](FrameView& frameView) {