Introduce LayoutObject::AncestorSkipInfo.

third_party/WebKit/Source/core/layout/LayoutObjectTest.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 "core/layout/LayoutObject.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
 #include "platform/json/JSONValues.h"
@@ skipping 151 matching lines @@
   LayoutBoxModelObject* layeredSpan =
       toLayoutBoxModelObject(getLayoutObjectByElementId("layered-span"));
   LayoutObject* floating = getLayoutObjectByElementId("floating");
 
   EXPECT_EQ(layeredDiv->layer(), layeredDiv->paintingLayer());
   EXPECT_EQ(layeredSpan->layer(), layeredSpan->paintingLayer());
   EXPECT_EQ(layeredDiv->layer(), floating->paintingLayer());
   EXPECT_EQ(container, floating->container());
   EXPECT_EQ(container, floating->containingBlock());
 
-  bool ancestorSkipped = false;
-  EXPECT_EQ(container, floating->container(layeredSpan, &ancestorSkipped));
-  EXPECT_TRUE(ancestorSkipped);
+  LayoutObject::AncestorSkipInfo skipInfo(layeredSpan);
+  EXPECT_EQ(container, floating->container(&skipInfo));
+  EXPECT_TRUE(skipInfo.ancestorSkipped);
 
-  ancestorSkipped = false;
-  EXPECT_EQ(container, floating->container(container, &ancestorSkipped));
-  EXPECT_FALSE(ancestorSkipped);
+  skipInfo.setAncestor(container);
+  EXPECT_EQ(container, floating->container(&skipInfo));
+  EXPECT_FALSE(skipInfo.ancestorSkipped);
 }
 
 TEST_F(LayoutObjectTest, MutableForPaintingClearPaintFlags) {
   LayoutObject* object = document().body()->layoutObject();
   object->setShouldDoFullPaintInvalidation();
   EXPECT_TRUE(object->shouldDoFullPaintInvalidation());
   object->m_bitfields.setChildShouldCheckForPaintInvalidation(true);
   EXPECT_TRUE(object->m_bitfields.childShouldCheckForPaintInvalidation());
   object->setMayNeedPaintInvalidation();
   EXPECT_TRUE(object->mayNeedPaintInvalidation());
@@ skipping 19 matching lines @@
   EXPECT_FALSE(object->mayNeedPaintInvalidation());
   EXPECT_FALSE(object->mayNeedPaintInvalidationSubtree());
   EXPECT_FALSE(object->mayNeedPaintInvalidationAnimatedBackgroundImage());
   EXPECT_FALSE(object->shouldInvalidateSelection());
   EXPECT_FALSE(object->backgroundChangedSinceLastPaintInvalidation());
   EXPECT_FALSE(object->needsPaintPropertyUpdate());
   EXPECT_FALSE(object->descendantNeedsPaintPropertyUpdate());
 }
 
 }  // namespace blink