Remove TiledBacking / TileCache code

Source/WebCore/platform/HostWindow.h

 /*
  * Copyright (C) 2008 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 32 matching lines @@
 
     // Requests the host invalidate the contents and the root view.
     virtual void invalidateContentsAndRootView(const IntRect& updateRect) = 0;
 
     // Requests the host scroll backingstore by the specified delta, rect to scroll, and clip rect.
     virtual void scroll(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect) = 0;
 
     // Requests the host invalidate the contents, not the root view. This is the slow path for scrolling.
     virtual void invalidateContentsForSlowScroll(const IntRect& updateRect) = 0;
 
-#if USE(TILED_BACKING_STORE)
-    // Requests the host to do the actual scrolling. This is only used in combination with a tiled backing store.
-    virtual void delegatedScrollRequested(const IntPoint& scrollPoint) = 0;
-#endif
-
     // Methods for doing coordinate conversions to and from screen coordinates.
     virtual IntPoint screenToRootView(const IntPoint&) const = 0;
     virtual IntRect rootViewToScreen(const IntRect&) const = 0;
 
     // Method for retrieving the native client of the page.
     virtual PlatformPageClient platformPageClient() const = 0;
     
     // To notify WebKit of scrollbar mode changes.
     virtual void scrollbarsModeDidChange() const = 0;
 
     // Request that the cursor change.
     virtual void setCursor(const Cursor&) = 0;
 
     virtual void setCursorHiddenUntilMouseMoves(bool) = 0;
 
     virtual void scheduleAnimation() = 0;
 };
 
 } // namespace WebCore
 
 #endif // HostWindow_h