Turn FrameView's paintBehavior into a real global

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 "config.h"
 #include "core/paint/BoxPainter.h"
 
 #include "core/HTMLNames.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLFrameOwnerElement.h"
@@ skipping 507 matching lines @@
     LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutBox, paintInfo.phase, visualOverflowRect);
     LayoutRect paintRect = LayoutRect(paintOffset, m_layoutBox.size());
     paintMaskImages(paintInfo, paintRect);
 }
 
 void BoxPainter::paintMaskImages(const PaintInfo& paintInfo, const LayoutRect& paintRect)
 {
     // Figure out if we need to push a transparency layer to render our mask.
     bool pushTransparencyLayer = false;
     bool compositedMask = m_layoutBox.hasLayer() && m_layoutBox.layer()->hasCompositedMask();
-    bool flattenCompositingLayers = m_layoutBox.view()->frameView() && m_layoutBox.view()->frameView()->paintBehavior() & PaintBehaviorFlattenCompositingLayers;
+    bool flattenCompositingLayers = gGlobalPaintFlags & GlobalPaintFlattenCompositingLayers;
 
     bool allMaskImagesLoaded = true;
 
     if (!compositedMask || flattenCompositingLayers) {
         pushTransparencyLayer = true;
         StyleImage* maskBoxImage = m_layoutBox.style()->maskBoxImage().image();
         const FillLayer& maskLayers = m_layoutBox.style()->maskLayers();
 
         // Don't render a masked element until all the mask images have loaded, to prevent a flash of unmasked content.
         if (maskBoxImage)
@@ skipping 224 matching lines @@
     return ImageQualityController::imageQualityController()->chooseInterpolationQuality(context, &obj, image, layer, size);
 }
 
 bool BoxPainter::fixedBackgroundPaintsInLocalCoordinates(const LayoutObject& obj)
 {
     if (!obj.isLayoutView())
         return false;
 
     const LayoutView& view = toLayoutView(obj);
 
-    if (view.frameView() && view.frameView()->paintBehavior() & PaintBehaviorFlattenCompositingLayers)
+    if (gGlobalPaintFlags & GlobalPaintFlattenCompositingLayers)
         return false;
 
     DeprecatedPaintLayer* rootLayer = view.layer();
     if (!rootLayer || rootLayer->compositingState() == NotComposited)
         return false;
 
     return rootLayer->compositedDeprecatedPaintLayerMapping()->backgroundLayerPaintsFixedRootBackground();
 }
 
 static inline void applySubPixelHeuristicForTileSize(LayoutSize& tileSize, const IntSize& positioningAreaSize)
@@ skipping 260 matching lines @@
     }
 }
 
 bool BoxPainter::shouldForceWhiteBackgroundForPrintEconomy(const ComputedStyle& style, const Document& document)
 {
     return document.printing() && style.printColorAdjust() == PrintColorAdjustEconomy
         && (!document.settings() || !document.settings()->shouldPrintBackgrounds());
 }
 
 } // namespace blink