Paint invisible layer content in presence of composited animations.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EffectPaintPropertyNode_h
 #define EffectPaintPropertyNode_h
 
 #include "cc/layers/layer.h"
 #include "platform/PlatformExport.h"
 #include "platform/graphics/CompositorElementId.h"
@@ skipping 95 matching lines @@
 
   String toTreeString() const;
 #endif
 
   String toString() const;
 
   bool hasDirectCompositingReasons() const {
     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;
   }
 
  private:
   EffectPaintPropertyNode(
       PassRefPtr<const EffectPaintPropertyNode> parent,
       PassRefPtr<const TransformPaintPropertyNode> localTransformSpace,
       PassRefPtr<const ClipPaintPropertyNode> outputClip,
       CompositorFilterOperations filter,
@@ skipping 40 matching lines @@
   CompositorElementId m_compositorElementId;
 };
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/PaintPrinters.h.
 void PrintTo(const EffectPaintPropertyNode&, std::ostream*);
 
 }  // namespace blink
 
 #endif  // EffectPaintPropertyNode_h