Disable scroll anchoring when in printing mode

third_party/WebKit/Source/core/page/PrintContext.cpp

 /*
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2007 Apple Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 158 matching lines @@
 
   // This function can be called multiple times to adjust printing parameters
   // without going back to screen mode.
   m_isPrinting = true;
 
   FloatSize originalPageSize = FloatSize(width, height);
   FloatSize minLayoutSize = m_frame->resizePageRectsKeepingRatio(
       originalPageSize, FloatSize(width * printingMinimumShrinkFactor,
                                   height * printingMinimumShrinkFactor));
 
+  m_frame->view()->setDisableScrollAnchoringForPrinting(true);
+
   // This changes layout, so callers need to make sure that they don't paint to
   // screen while in printing mode.
   m_frame->setPrinting(
       true, minLayoutSize, originalPageSize,
       printingMaximumShrinkFactor / printingMinimumShrinkFactor);
 }
 
 void PrintContext::end() {
   ASSERT(m_isPrinting);
   m_isPrinting = false;
   m_frame->setPrinting(false, FloatSize(), FloatSize(), 0);
+  m_frame->view()->setDisableScrollAnchoringForPrinting(false);
   m_linkedDestinations.clear();
   m_linkedDestinationsValid = false;
 }
 
 static LayoutBoxModelObject* enclosingBoxModelObject(LayoutObject* object) {
   while (object && !object->isBoxModelObject())
     object = object->parent();
   if (!object)
     return nullptr;
   return toLayoutBoxModelObject(object);
@@ skipping 142 matching lines @@
   printContext.computePageRectsWithPageSize(scaledPageSize);
   return printContext.pageCount();
 }
 
 DEFINE_TRACE(PrintContext) {
   visitor->trace(m_frame);
   visitor->trace(m_linkedDestinations);
 }
 
 }  // namespace blink