Force bleed avoidance for some background image rendering

third_party/WebKit/Source/core/paint/BoxPainter.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 "core/paint/BoxPainter.h"
 
 #include "core/HTMLNames.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/layout/ImageQualityController.h"
@@ skipping 74 matching lines @@
 
     BoxDecorationData boxDecorationData(m_layoutBox);
 
     // FIXME: Should eventually give the theme control over whether the box shadow should paint, since controls could have
     // custom shadows of their own.
     if (!m_layoutBox.boxShadowShouldBeAppliedToBackground(boxDecorationData.bleedAvoidance))
         paintBoxShadow(paintInfo, paintRect, style, Normal);
 
     GraphicsContextStateSaver stateSaver(paintInfo.context, false);
     if (bleedAvoidanceIsClipping(boxDecorationData.bleedAvoidance)) {
-
         stateSaver.save();
         FloatRoundedRect border = style.getRoundedBorderFor(paintRect);
         paintInfo.context.clipRoundedRect(border);
 
         if (boxDecorationData.bleedAvoidance == BackgroundBleedClipLayer)
             paintInfo.context.beginLayer();
     }
 
     // If we have a native theme appearance, paint that before painting our background.
     // The theme will tell us whether or not we should also paint the CSS background.
@@ skipping 22 matching lines @@
 {
     if (m_layoutBox.isDocumentElement())
         return;
     if (m_layoutBox.backgroundStolenForBeingBody())
         return;
     if (m_layoutBox.boxDecorationBackgroundIsKnownToBeObscured())
         return;
     paintFillLayers(paintInfo, backgroundColor, m_layoutBox.style()->backgroundLayers(), paintRect, bleedAvoidance);
 }
 
-static bool isFillLayerOpaque(const FillLayer& layer, const LayoutObject& imageClient)
+bool BoxPainter::isFillLayerOpaque(const FillLayer& layer, const LayoutObject& imageClient)
 {
     return layer.hasOpaqueImage(&imageClient)
         && layer.image()->canRender()
         && !layer.image()->imageSize(&imageClient, imageClient.style()->effectiveZoom()).isEmpty()
         && layer.hasRepeatXY();
 }
 
 bool BoxPainter::calculateFillLayerOcclusionCulling(FillLayerOcclusionOutputList &reversedPaintList, const FillLayer& fillLayer)
 {
     bool isNonAssociative = false;
@@ skipping 542 matching lines @@
     }
 }
 
 bool BoxPainter::shouldForceWhiteBackgroundForPrintEconomy(const ComputedStyle& style, const Document& document)
 {
     return document.printing() && style.printColorAdjust() == PrintColorAdjustEconomy
         && (!document.settings() || !document.settings()->shouldPrintBackgrounds());
 }
 
 } // namespace blink