Bug 1505374. Remove dead hasClip code from FrameLayerBuilder::AddPaintedDisplayItem. r=mattwoodrow

Differential Revision: https://phabricator.services.mozilla.com/D11168

--HG--
extra : rebase_source : c2637d8eea66e5e454c1de976083e3410e6c3569

layout/painting/FrameLayerBuilder.cpp

@@ -5741,7 +5741,6 @@ FrameLayerBuilder::AddPaintedDisplayItem(PaintedLayerData* aLayerData,
       layer->GetUserData(&gPaintedDisplayItemLayerUserData));
   RefPtr<BasicLayerManager> tempManager;
   nsIntRect intClip;
-  bool hasClip = false;
   if (aItem.mLayerState != LAYER_NONE) {
     if (aItem.mDisplayItemData) {
       tempManager = aItem.mDisplayItemData->mInactiveManager;
@@ -5903,10 +5902,6 @@ FrameLayerBuilder::AddPaintedDisplayItem(PaintedLayerData* aLayerData,
 
       invalid.ScaleRoundOut(paintedData->mXScale, paintedData->mYScale);
 
-      if (hasClip) {
-        invalid.And(invalid, intClip);
-      }
-
       InvalidatePostTransformRegion(
         layer, invalid, GetTranslationForPaintedLayer(layer));
     }