Replace various ScrollableArea scroll methods with setScrollPosition

Source/core/html/ImageDocument.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 277 matching lines @@
     else {
         restoreImageSize(ScaleZoomedDocument);
 
         updateLayout();
 
         double scale = this->scale();
 
         double scrollX = x / scale - static_cast<double>(frame()->view()->width()) / 2;
         double scrollY = y / scale - static_cast<double>(frame()->view()->height()) / 2;
 
-        frame()->view()->setScrollPosition(DoublePoint(scrollX, scrollY));
+        frame()->view()->setScrollPosition(DoublePoint(scrollX, scrollY), ProgrammaticScroll);
     }
 }
 
 void ImageDocument::imageUpdated()
 {
     ASSERT(m_imageElement);
 
     if (m_imageSizeIsKnown)
         return;
 
@@ skipping 134 matching lines @@
 }
 
 bool ImageEventListener::operator==(const EventListener& listener)
 {
     if (const ImageEventListener* imageEventListener = ImageEventListener::cast(&listener))
         return m_doc == imageEventListener->m_doc;
     return false;
 }
 
 }