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

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

Index: third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.cpp b/third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.cpp
index c765760c144bc432f713802cb09037e42a1fc1a4..8b3187376a9d8bb8e1c542b09a76a4f59f4378ad 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/DisplayItemListTest.cpp
@@ -8,6 +8,7 @@
 #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"
@@ -61,14 +62,24 @@
   // 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