Paint invisible layer content in presence of composited animations.

third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h

Index: third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h b/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h
index b9c9d19ea27cab601ae6129e03a6244b1f7d2aa0..c5f636d95bc62726f64c6732337e61c0e5e49cfa 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h
@@ -113,6 +113,10 @@ class PLATFORM_EXPORT EffectPaintPropertyNode
     return m_directCompositingReasons != CompositingReasonNone;
   }
 
+  CompositingReasons compositingReasons() const {

[wkorman, 2017/01/26 22:47:56]

If we'd prefer not to expose compositing reasons directly from the node we could
add accessors to each of these such as requiresCompositingForAnimation() that
performs the check internally.

[wkorman, 2017/01/27 03:53:12]

I made this change as I think it's cleaner.

+    return m_directCompositingReasons;
+  }
+
   const CompositorElementId& compositorElementId() const {
     return m_compositorElementId;
   }