[SPv2] Remove PaintArtifactCompositor::initializeIfNeeded.

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositorTest.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/compositing/PaintArtifactCompositor.h"
 
 #include "cc/layers/layer.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/paint/PaintArtifact.h"
 #include "platform/testing/PictureMatchers.h"
@@ skipping 11 matching lines @@
     gfx::Transform transform;
     transform.Translate(x, y);
     return transform;
 }
 
 class PaintArtifactCompositorTest : public ::testing::Test {
 protected:
     void SetUp() override
     {
         RuntimeEnabledFeatures::setSlimmingPaintV2Enabled(true);
-        m_paintArtifactCompositor.initializeIfNeeded();
+
+        // Delay constructing the compositor until after the feature is set.
+        m_paintArtifactCompositor = adoptPtr(new PaintArtifactCompositor);
     }
 
     void TearDown() override
     {
         m_featuresBackup.restore();
     }
 
-    PaintArtifactCompositor& paintArtifactCompositor() { return m_paintArtifactCompositor; }
-    cc::Layer* rootLayer() { return m_paintArtifactCompositor.rootLayer(); }
-    void update(const PaintArtifact& artifact) { m_paintArtifactCompositor.update(artifact); }
+    PaintArtifactCompositor& paintArtifactCompositor() { return *m_paintArtifactCompositor; }
+    cc::Layer* rootLayer() { return m_paintArtifactCompositor->rootLayer(); }
+    void update(const PaintArtifact& artifact) { m_paintArtifactCompositor->update(artifact); }
 
 private:
     RuntimeEnabledFeatures::Backup m_featuresBackup;
-    PaintArtifactCompositor m_paintArtifactCompositor;
+    OwnPtr<PaintArtifactCompositor> m_paintArtifactCompositor;
 };
 
 TEST_F(PaintArtifactCompositorTest, EmptyPaintArtifact)
 {
     PaintArtifact emptyArtifact;
     update(emptyArtifact);
     EXPECT_TRUE(rootLayer()->children().empty());
 }
 
 TEST_F(PaintArtifactCompositorTest, OneChunkWithAnOffset)
@@ skipping 242 matching lines @@
         ASSERT_EQ(1u, clipLayer2->children().size());
         cc::Layer* blackLayer = clipLayer2->child_at(0);
         EXPECT_THAT(blackLayer->GetPicture(),
             Pointee(drawsRectangle(FloatRect(0, 0, 640, 480), Color::black)));
         EXPECT_EQ(translation(-400, 0), blackLayer->transform());
     }
 }
 
 } // namespace
 } // namespace blink