Remove infinite clip in PaintArtifactCompositor.

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp

 // Copyright 2015 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 "platform/graphics/compositing/PaintArtifactCompositor.h"
 
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/playback/compositing_display_item.h"
@@ skipping 279 matching lines @@
                                              success);
     DCHECK(success);
     // Clips are only in descendant spaces that are transformed by one
     // or more scrolls.
     DCHECK(localToAncestorMatrix.isIdentityOrTranslation());
   }
 #endif
 
   FloatRect combinedClip;
   bool success = false;
-  // TODO(chrishtr) :get rid of infiniteIntRect here.
-  combinedClip = geometryMapper.localToVisualRectInAncestorSpace(
-      FloatRect(LayoutRect::infiniteIntRect()), localState, ancestorState,
-      success);
-
+  combinedClip = geometryMapper.localToAncestorClipRect(localState,
+                                                        ancestorState, success);
   DCHECK(success);
 
   ccList.CreateAndAppendPairedBeginItem<cc::FloatClipDisplayItem>(
       gfx::RectF(combinedClip));
   endDisplayItems.push_back(EndClip);
 }
 
 static void recordPairedBeginDisplayItems(
     const Vector<PropertyTreeState>& pairedStates,
     const PropertyTreeState& pendingLayerState,
@@ skipping 868 matching lines @@
 #ifndef NDEBUG
 void PaintArtifactCompositor::showDebugData() {
   LOG(ERROR) << layersAsJSON(LayerTreeIncludesDebugInfo)
                     ->toPrettyJSONString()
                     .utf8()
                     .data();
 }
 #endif
 
 }  // namespace blink