Revert of Remove begin/end subseq. display items, and store on PaintController instead.

third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.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/DisplayItemList.h"
 
 #include "SkTypes.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 #include "platform/graphics/paint/PaintFlags.h"
 #include "platform/graphics/paint/PaintRecorder.h"
+#include "platform/graphics/paint/SubsequenceDisplayItem.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "platform/testing/FakeDisplayItemClient.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 namespace {
 
 #define EXPECT_RECT_EQ(expected, actual)               \
   do {                                                 \
     const IntRect& actualRect = actual;                \
@@ skipping 33 matching lines @@
   EXPECT_EQ(static_cast<size_t>(1), m_list.size());
   EXPECT_RECT_EQ(drawingBounds, m_list.visualRect(0));
 }
 
 TEST_F(DisplayItemListTest, AppendVisualRect_BlockContainingDrawing) {
   // TODO(wkorman): Note the visual rects for the paired begin/end are now
   // irrelevant as they're overwritten in cc::DisplayItemList when rebuilt to
   // represent the union of all drawing display item visual rects between the
   // pair. We should consider revising Blink's display item list in some form
   // so as to only store visual rects for drawing display items.
+
+  IntRect subsequenceBounds(5, 6, 7, 8);
+  m_list.allocateAndConstruct<BeginSubsequenceDisplayItem>(m_client);
+  m_list.appendVisualRect(subsequenceBounds);
+
   IntRect drawingBounds(5, 6, 1, 1);
   m_list.allocateAndConstruct<DrawingDisplayItem>(
       m_client, DisplayItem::Type::kDocumentBackground,
       createRectRecord(drawingBounds), true);
   m_list.appendVisualRect(drawingBounds);
 
-  EXPECT_EQ(static_cast<size_t>(1), m_list.size());
-  EXPECT_RECT_EQ(drawingBounds, m_list.visualRect(0));
+  m_list.allocateAndConstruct<EndSubsequenceDisplayItem>(m_client);
+  m_list.appendVisualRect(subsequenceBounds);
+
+  EXPECT_EQ(static_cast<size_t>(3), m_list.size());
+  EXPECT_RECT_EQ(subsequenceBounds, m_list.visualRect(0));
+  EXPECT_RECT_EQ(drawingBounds, m_list.visualRect(1));
+  EXPECT_RECT_EQ(subsequenceBounds, m_list.visualRect(2));
 }
 }  // namespace
 }  // namespace blink