Remove the SVG paint culling optimization

Source/core/rendering/svg/RenderSVGBlock.cpp

Index: Source/core/rendering/svg/RenderSVGBlock.cpp
diff --git a/Source/core/rendering/svg/RenderSVGBlock.cpp b/Source/core/rendering/svg/RenderSVGBlock.cpp
index a3dc5c9d07b3722ad48f2003efcd85788a24a8b3..8dbc41091d05b9ad006a2f73774764c82b0e4b29 100644
--- a/Source/core/rendering/svg/RenderSVGBlock.cpp
+++ b/Source/core/rendering/svg/RenderSVGBlock.cpp
@@ -126,8 +126,29 @@ void RenderSVGBlock::invalidateTreeIfNeeded(const PaintInvalidationState& paintI
     if (!shouldCheckForPaintInvalidation(paintInvalidationState))
         return;
 
+    if (paintInvalidationState.cachedOffsetsEnabled()) {
+        m_cachedPaintInvalidationTransform = paintInvalidationState.svgTransform();
+    } else {
+        AffineTransform transform = localTransform();

[fs, 2014/12/19 11:46:00]

This shouldn't be included, because it's included in updatePaintInfoRect (and
not included in the cached-part of the if-else).

[pdr., 2014/12/19 18:39:15]

Done

+        RenderObject* next = parent();
+        while (!next->isSVGRoot()) {
+            transform = next->localToParentTransform() * transform;
+            next = next->parent();
+            ASSERT(next);
+        }
+        m_cachedPaintInvalidationTransform = toRenderSVGRoot(next)->localToBorderBoxTransform() * transform;
+    }
+
     ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState);
     RenderBlockFlow::invalidateTreeIfNeeded(paintInvalidationState);
 }
 
+void RenderSVGBlock::updatePaintInfoRect(IntRect& rect)
+{
+    if (rect != LayoutRect::infiniteRect()) {
+        AffineTransform transformToRoot = m_cachedPaintInvalidationTransform * localTransform();
+        rect = enclosingIntRect(transformToRoot.inverse().mapRect(FloatRect(rect)));
+    }
+}
+
 }