Get rid of redundant parameter PositionIsOffsetInAnchor from PositionAlgorithm constructor

Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 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 454 matching lines @@
                 // If the selection was cleared while the WebView was not
                 // focused, then the focus element shows with a focus ring but
                 // no caret and does respond to keyboard inputs.
                 if (element->isTextFormControl()) {
                     element->updateFocusAppearance(true);
                 } else if (element->isContentEditable()) {
                     // updateFocusAppearance() selects all the text of
                     // contentseditable DIVs. So we set the selection explicitly
                     // instead. Note that this has the side effect of moving the
                     // caret back to the beginning of the text.
-                    Position position(element, 0, Position::PositionIsOffsetInAnchor);
+                    Position position(element, 0);
                     localFrame->selection().setSelection(VisibleSelection(position, SEL_DEFAULT_AFFINITY));
                 }
             }
         }
     }
 }
 
 bool WebFrameWidgetImpl::setComposition(
     const WebString& text,
     const WebVector<WebCompositionUnderline>& underlines,
@@ skipping 559 matching lines @@
     // correspond to Page visibility, but is necessary until we properly sort out OOPIF visibility.
     m_page->setVisibilityState(static_cast<PageVisibilityState>(visibilityState), isInitialState);
 
     if (m_layerTreeView) {
         bool visible = visibilityState == WebPageVisibilityStateVisible;
         m_layerTreeView->setVisible(visible);
     }
 }
 
 } // namespace blink