Remove the SVG paint culling optimization

Source/core/paint/SVGTextPainter.cpp

 // Copyright 2014 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.
 
 #include "config.h"
 #include "core/paint/SVGTextPainter.h"
 
 #include "core/paint/BlockPainter.h"
 #include "core/rendering/PaintInfo.h"
 #include "core/rendering/svg/RenderSVGText.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 
 namespace blink {
 
 void SVGTextPainter::paint(const PaintInfo& paintInfo)
 {
     if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)
         return;
 
     PaintInfo blockInfo(paintInfo);
     GraphicsContextStateSaver stateSaver(*blockInfo.context, false);
 
     blockInfo.applyTransform(m_renderSVGText.localToParentTransform(), &stateSaver);
 
+    // When transitioning from SVG to block painters we need to keep the PaintInfo rect up-to-date
+    // because it can be used for clipping.
+    AffineTransform transformToRoot = m_renderSVGText.cachedPaintInvalidationTransform() * m_renderSVGText.localToParentTransform();

[fs, 2014/12/17 10:16:10]

Nit: Same as for fO. (Would it make sense to move this to a method on
RenderSVGBlock?)

[pdr., 2014/12/18 22:22:40]

Good idea. Done.

+    if (blockInfo.rect != LayoutRect::infiniteRect())
+        blockInfo.rect = enclosingIntRect(transformToRoot.inverse().mapRect(FloatRect(blockInfo.rect)));
+
     BlockPainter(m_renderSVGText).paint(blockInfo, LayoutPoint());
 
     // Paint the outlines, if any
     if (paintInfo.phase == PaintPhaseForeground) {
         blockInfo.phase = PaintPhaseSelfOutline;
         BlockPainter(m_renderSVGText).paint(blockInfo, LayoutPoint());
     }
 }
 
 } // namespace blink