Fix bugs in clip parent calculations

Source/core/rendering/compositing/CompositingInputsUpdater.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/rendering/compositing/CompositingInputsUpdater.h"
 
 #include "core/rendering/RenderBlock.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/compositing/CompositedLayerMapping.h"
@@ skipping 53 matching lines @@
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 static bool hasClippedStackingAncestor(const RenderLayer* layer, const RenderLayer* clippingLayer)
 {
     if (layer == clippingLayer)
         return false;
     const RenderObject* clippingRenderer = clippingLayer->renderer();
     for (const RenderLayer* current = layer->compositingContainer(); current && current != clippingLayer; current = current->compositingContainer()) {
+        if (current->renderer()->hasClipOrOverflowClip() && !clippingRenderer->isDescendantOf(current->renderer()))
+            return true;
+
         if (const RenderObject* container = current->clippingContainer()) {
             if (clippingRenderer != container && !clippingRenderer->isDescendantOf(container))
                 return true;
         }
     }
     return false;
 }
 
 void CompositingInputsUpdater::updateRecursive(RenderLayer* layer, UpdateType updateType, AncestorInfo info)
 {
@@ skipping 95 matching lines @@
     ASSERT(!layer->childNeedsCompositingInputsUpdate());
     ASSERT(!layer->needsCompositingInputsUpdate());
 
     for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling())
         assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 } // namespace blink