Turn FrameView's paintBehavior into a real global

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index d7362b387583bdce737827918f1543e45b9ab428..3292dfb5379be3274c41ad9ffd80be3a49db7221 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -85,7 +85,6 @@ struct ScopedFramePaintingState {
     ScopedFramePaintingState(LocalFrame* frame, Node* node)
         : frame(frame)
         , node(node)
-        , paintBehavior(frame->view()->paintBehavior())
     {
         ASSERT(!node || node->layoutObject());
         if (node)
@@ -96,13 +95,15 @@ struct ScopedFramePaintingState {
     {
         if (node && node->layoutObject())
             node->layoutObject()->updateDragState(false);
-        frame->view()->setPaintBehavior(paintBehavior);
         frame->view()->setNodeToDraw(0);
+        // We reset the global paint flags as this is the end
+        // of the paint phase. TODO(jchaffraix): We shouldn't
+        // need this code. See the comment above GlobalPaintFlags.
+        gGlobalPaintFlags = GlobalPaintNormalPhase;
     }
 
     LocalFrame* frame;
     Node* node;
-    PaintBehavior paintBehavior;
 };
 
 inline float parentPageZoomFactor(LocalFrame* frame)
@@ -628,7 +629,7 @@ PassOwnPtr<DragImage> LocalFrame::nodeImage(Node& node)
 
     m_view->updateAllLifecyclePhases();
 
-    m_view->setPaintBehavior(state.paintBehavior | PaintBehaviorFlattenCompositingLayers);
+    gGlobalPaintFlags = GlobalPaintFlattenCompositingLayers;
 
     m_view->setNodeToDraw(&node); // Enable special sub-tree drawing mode.
 
@@ -649,7 +650,7 @@ PassOwnPtr<DragImage> LocalFrame::dragImageForSelection()
         return nullptr;
 
     const ScopedFramePaintingState state(this, 0);
-    m_view->setPaintBehavior(PaintBehaviorSelectionOnly | PaintBehaviorFlattenCompositingLayers);
+    gGlobalPaintFlags = GlobalPaintSelectionOnly | GlobalPaintFlattenCompositingLayers;
     m_view->updateAllLifecyclePhases();
 
     return paintIntoDragImage(*this, DisplayItem::ClipSelectionImage, DoNotRespectImageOrientation, enclosingIntRect(selection().bounds()));