Revert 138188

Source/WebCore/page/scrolling/ScrollingCoordinator.cpp

Index: Source/WebCore/page/scrolling/ScrollingCoordinator.cpp
===================================================================
--- Source/WebCore/page/scrolling/ScrollingCoordinator.cpp	(revision 138208)
+++ Source/WebCore/page/scrolling/ScrollingCoordinator.cpp	(working copy)
@@ -27,7 +27,6 @@
 
 #include "ScrollingCoordinator.h"
 
-#include "Document.h"
 #include "Frame.h"
 #include "FrameView.h"
 #include "GraphicsLayer.h"
@@ -178,57 +177,6 @@
     return nonFastScrollableRegion;
 }
 
-#if ENABLE(TOUCH_EVENT_TRACKING)
-static void accumulateRendererTouchEventTargetRects(Vector<IntRect>& rects, const RenderObject* renderer)
-{
-    // FIXME: This method is O(N^2) as it walks the tree to the root for every renderer. RenderGeometryMap would fix this.
-    rects.append(enclosingIntRect(renderer->clippedOverflowRectForRepaint(0)));
-    if (renderer->isRenderBlock()) {
-        const RenderBlock* block = toRenderBlock(renderer);
-        for (RenderObject* child = block->firstChild(); child; child = child->nextSibling())
-            accumulateRendererTouchEventTargetRects(rects, child);
-    }
-}
-
-static void accumulateDocumentEventTargetRects(Vector<IntRect>& rects, const Document* document)
-{
-    ASSERT(document);
-    if (!document->touchEventTargets())
-        return;
-
-    const TouchEventTargetSet* targets = document->touchEventTargets();
-    for (TouchEventTargetSet::const_iterator iter = targets->begin(); iter != targets->end(); ++iter) {
-        const Node* touchTarget = iter->key;
-        if (!touchTarget->inDocument())
-            continue;
-
-        if (touchTarget == document) {
-            if (RenderView* view = document->renderView())
-                rects.append(enclosingIntRect(view->clippedOverflowRectForRepaint(0)));
-            return;
-        }
-
-        if (touchTarget->isDocumentNode() && touchTarget != document) {
-            accumulateDocumentEventTargetRects(rects, static_cast<const Document*>(touchTarget));
-            continue;
-        }
-
-        if (RenderObject* renderer = touchTarget->renderer())
-            accumulateRendererTouchEventTargetRects(rects, renderer);
-    }
-}
-
-void ScrollingCoordinator::computeAbsoluteTouchEventTargetRects(const Document* document, Vector<IntRect>& rects)
-{
-    ASSERT(document);
-    if (!document->view())
-        return;
-
-    // FIXME: These rects won't be properly updated if the renderers are in a sub-tree that scrolls.
-    accumulateDocumentEventTargetRects(rects, document);
-}
-#endif
-
 unsigned ScrollingCoordinator::computeCurrentWheelEventHandlerCount()
 {
     unsigned wheelEventHandlerCount = 0;