Blink-side contiguous allocation of display items.

Source/platform/graphics/paint/DisplayItemTransformTreeBuilderTest.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 "config.h"
 #include "platform/graphics/paint/DisplayItemTransformTreeBuilder.h"
 
 #include "platform/graphics/paint/DisplayItem.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "platform/graphics/paint/DisplayItemTransformTree.h"
+#include "platform/graphics/paint/DisplayItems.h"
 #include "platform/graphics/paint/Transform3DDisplayItem.h"
 #include "platform/transforms/TransformTestHelper.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "public/platform/WebDisplayItemTransformTree.h"
 #include <gtest/gtest.h>
 
 namespace blink {
 namespace {
 
 using RangeRecord = WebDisplayItemTransformTree::RangeRecord;
 
 struct DummyClient {
     DisplayItemClient displayItemClient() const { return toDisplayItemClient(this); }
     String debugName() const { return "DummyClient"; }
 };
 
 class DummyDisplayItem : public DisplayItem {
 public:
-    static PassOwnPtr<DummyDisplayItem> create(const DummyClient& client) { return adoptPtr(new DummyDisplayItem(client)); }
+    DummyDisplayItem(const DummyClient& client) : DisplayItem(client, DisplayItem::DrawingFirst), m_dummyClient(client) { }
+
+    void appendByMoving(DisplayItems& destination) override
+    {
+        destination.emplaceBack<DummyDisplayItem>(m_dummyClient);
+    }
+
 private:
-    DummyDisplayItem(const DummyClient& client) : DisplayItem(client, DisplayItem::DrawingFirst) { }
+    const DummyClient& m_dummyClient;
 };
 
 class DisplayItemTransformTreeBuilderTest : public ::testing::Test {
 protected:
     DisplayItemTransformTreeBuilder& builder() { return m_builder; }
 
     void processDisplayItem(const DisplayItem& displayItem) { m_builder.processDisplayItem(displayItem); }
     void processDisplayItem(PassOwnPtr<DisplayItem> displayItem) { processDisplayItem(*displayItem); }
-    void processDummyDisplayItem() { processDisplayItem(DummyDisplayItem::create(newDummyClient())); }
+    void processDummyDisplayItem() { processDisplayItem(adoptPtr(new DummyDisplayItem(newDummyClient()))); }
     const DummyClient& processBeginTransform3D(const TransformationMatrix& transform)
     {
         const DummyClient& client = newDummyClient();
-        processDisplayItem(BeginTransform3DDisplayItem::create(client, DisplayItem::Transform3DElementTransform, transform));
+        processDisplayItem(adoptPtr(new BeginTransform3DDisplayItem(client, DisplayItem::Transform3DElementTransform, transform)));
         return client;
     }
     void processEndTransform3D(const DummyClient& client)
     {
-        processDisplayItem(EndTransform3DDisplayItem::create(client, DisplayItem::transform3DTypeToEndTransform3DType(DisplayItem::Transform3DElementTransform)));
+        processDisplayItem(adoptPtr(new EndTransform3DDisplayItem(client, DisplayItem::transform3DTypeToEndTransform3DType(DisplayItem::Transform3DElementTransform))));
     }
 
 private:
     // This makes empty objects which can be used as display item clients.
     const DummyClient& newDummyClient()
     {
         m_dummyClients.append(adoptPtr(new DummyClient));
         return *m_dummyClients.last();
     }
 
@@ skipping 225 matching lines @@
     WebDisplayItemTransformTree tree(builder().releaseTransformTree());
 
     const auto& transformNode = tree.nodeAt(tree.rangeRecordAt(0).transformNodeIndex);
     ASSERT_FALSE(transformNode.isRoot());
     EXPECT_TRANSFORMS_ALMOST_EQ(matrix2, transformNode.matrix);
     EXPECT_TRANSFORMS_ALMOST_EQ(matrix1, tree.parentNode(transformNode).matrix);
 }
 
 } // namespace
 } // namespace blink