Move all fast-path paint invalidation mapping into PaintInvalidationState

third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp

Index: third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp b/third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp
index 94e198a4a9d4744583cfe22d1de49311c4a60b22..6ff1ca7467bda3594dc8ee1128d4dceaedfe5117 100644
--- a/third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/SVGContainerPainter.cpp
@@ -24,7 +24,9 @@ void SVGContainerPainter::paint(const PaintInfo& paintInfo)
         return;
 
     FloatRect boundingBox = m_layoutSVGContainer.paintInvalidationRectInLocalSVGCoordinates();
-    if (!paintInfo.cullRect().intersectsCullRect(m_layoutSVGContainer.localToSVGParentTransform(), boundingBox))
+    // LayoutSVGHiddenContainer's paint invalidation rect is always empty but we need to paint its descendants.
+    if (!m_layoutSVGContainer.isSVGHiddenContainer()

[Xianzhu, 2016/03/25 16:35:55]

This is needed because previously LayoutSVGHiddenContainer implemented
clippedOverflowRectForPaintInvalidation() (which returned empty rect) and
paintInvalidationRectInLocalSVGCoordinates() (which returned non-empty rect
covering its descendants) differently.

+        && !paintInfo.cullRect().intersectsCullRect(m_layoutSVGContainer.localToSVGParentTransform(), boundingBox))
         return;
 
     // Spec: An empty viewBox on the <svg> element disables rendering.