Replace various ScrollableArea scroll methods with setScrollPosition

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 886 matching lines @@
 {
     PinchViewport& pinchViewport = page()->frameHost().pinchViewport();
     WebPoint clampedPoint = targetPosition;
     if (!useAnchor) {
         clampedPoint = pinchViewport.clampDocumentOffsetAtScale(targetPosition, newScale);
         if (!durationInSeconds) {
             setPageScaleFactor(newScale);
 
             FrameView* view = mainFrameImpl()->frameView();
             if (view && view->scrollableArea())
-                view->scrollableArea()->setScrollPosition(DoublePoint(clampedPoint.x, clampedPoint.y));
+                view->scrollableArea()->setScrollPosition(DoublePoint(clampedPoint.x, clampedPoint.y), ProgrammaticScroll);
 
             return false;
         }
     }
     if (useAnchor && newScale == pageScaleFactor())
         return false;
 
     if (m_enableFakePageScaleAnimationForTesting) {
         m_fakePageScaleAnimationTargetPosition = targetPosition;
         m_fakePageScaleAnimationUseAnchor = useAnchor;
@@ skipping 2147 matching lines @@
     if (!mainFrameImpl())
         return;
 
     FrameView * view = mainFrameImpl()->frameView();
     if (!view)
         return;
 
     // Order is important: pinch viewport location is clamped based on
     // main frame scroll position and pinch viewport scale.
 
-    view->setScrollOffset(mainFrameOrigin);
+    view->setScrollPosition(mainFrameOrigin, ProgrammaticScroll);
 
     setPageScaleFactor(scaleFactor);
 
     page()->frameHost().pinchViewport().setLocation(pinchViewportOrigin);
 }
 
 void WebViewImpl::setPageScaleFactorAndLocation(float scaleFactor, const FloatPoint& location)
 {
     ASSERT(page());
 
@@ skipping 1325 matching lines @@
 {
     WebGLRenderingContext::forceNextWebGLContextCreationToFail();
 }
 
 void WebViewImpl::forceNextDrawingBufferCreationToFail()
 {
     DrawingBuffer::forceNextDrawingBufferCreationToFail();
 }
 
 } // namespace blink