[Experimental] Supporting OOPIF printing

third_party/WebKit/Source/core/paint/FramePainter.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/FramePainter.h"
 
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/frame/FrameView.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
@@ skipping 98 matching lines @@
       }
     }
 
     TransformRecorder transformRecorder(
         context, *frameView().layoutView(),
         AffineTransform::translation(frameView().x(), frameView().y()));
 
     ClipRecorder recorder(
         context, *frameView().layoutView(), DisplayItem::kClipFrameScrollbars,
         IntRect(IntPoint(), visibleAreaWithScrollbars.size()));
-
     paintScrollbars(context, scrollViewDirtyRect);
   }
 }
 
 void FramePainter::paintContents(GraphicsContext& context,
                                  const GlobalPaintFlags globalPaintFlags,
                                  const IntRect& rect) {
   Document* document = frameView().frame().document();
 
   if (frameView().shouldThrottleRendering() || !document->isActive())
@@ skipping 61 matching lines @@
     s_inPaintContents = false;
   }
 
   InspectorInstrumentation::didPaint(layoutView->frame(), 0, context,
                                      LayoutRect(rect));
 }
 
 void FramePainter::paintScrollbars(GraphicsContext& context,
                                    const IntRect& rect) {
   if (frameView().horizontalScrollbar() &&
-      !frameView().layerForHorizontalScrollbar())
+      (frameView().frame().document()->printing() ||
+       !frameView().layerForHorizontalScrollbar()))
     paintScrollbar(context, *frameView().horizontalScrollbar(), rect);
   if (frameView().verticalScrollbar() &&
-      !frameView().layerForVerticalScrollbar())
+      (frameView().frame().document()->printing() ||
+       !frameView().layerForVerticalScrollbar()))
     paintScrollbar(context, *frameView().verticalScrollbar(), rect);
 
   if (frameView().layerForScrollCorner())
     return;
 
   paintScrollCorner(context, frameView().scrollCornerRect());
 }
 
 void FramePainter::paintScrollCorner(GraphicsContext& context,
                                      const IntRect& cornerRect) {
@@ skipping 31 matching lines @@
 
   bar.paint(context, CullRect(rect));
 }
 
 const FrameView& FramePainter::frameView() {
   DCHECK(m_frameView);
   return *m_frameView;
 }
 
 }  // namespace blink