Remove infinite clip in PaintArtifactCompositor.

third_party/WebKit/Source/platform/graphics/paint/GeometryMapperTest.cpp

 // Copyright 2016 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/paint/GeometryMapper.h"
 
 #include "platform/geometry/GeometryTestHelpers.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/paint/ClipPaintPropertyNode.h"
 #include "platform/graphics/paint/EffectPaintPropertyNode.h"
@@ skipping 59 matching lines @@
                        expectedTransformToAncestor,                            \
                        expectedClipInAncestorSpace, localPropertyTreeState,    \
                        ancestorPropertyTreeState)                              \
   do {                                                                         \
     bool success = false;                                                      \
     EXPECT_RECT_EQ(expectedVisualRect,                                         \
                    geometryMapper->localToVisualRectInAncestorSpace(           \
                        inputRect, localPropertyTreeState,                      \
                        ancestorPropertyTreeState, success));                   \
     EXPECT_TRUE(success);                                                      \
+    FloatRect mappedClip = geometryMapper->localToAncestorClipRect(            \
+        localPropertyTreeState, ancestorPropertyTreeState, success);           \
+    EXPECT_TRUE(success);                                                      \
+    EXPECT_RECT_EQ(expectedClipInAncestorSpace, mappedClip);                   \
     EXPECT_RECT_EQ(expectedVisualRect,                                         \
                    geometryMapper->mapToVisualRectInDestinationSpace(          \
                        inputRect, localPropertyTreeState,                      \
                        ancestorPropertyTreeState, success));                   \
     EXPECT_TRUE(success);                                                      \
     EXPECT_RECT_EQ(expectedTransformedRect,                                    \
                    geometryMapper->localToAncestorRect(                        \
                        inputRect, localPropertyTreeState,                      \
                        ancestorPropertyTreeState, success));                   \
     EXPECT_RECT_EQ(expectedTransformedRect,                                    \
@@ skipping 482 matching lines @@
   EXPECT_EQ(rootPropertyTreeState().transform(),
             leastCommonAncestor(childOfChild2.get(),
                                 rootPropertyTreeState().transform()));
   EXPECT_EQ(child2, leastCommonAncestor(childOfChild2.get(), child2.get()));
 
   EXPECT_EQ(rootPropertyTreeState().transform(),
             leastCommonAncestor(child1.get(), child2.get()));
 }
 
 }  // namespace blink