[SPv2] Remove PaintArtifactCompositor::initializeIfNeeded.

third_party/WebKit/Source/web/WebViewImplPaintArtifactCompositorTest.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 "web/WebViewImpl.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/compositing/PaintArtifactCompositor.h"
 #include "public/platform/WebLayerTreeView.h"
 #include "public/web/WebViewClient.h"
@@ skipping 50 matching lines @@
 
 private:
     RuntimeEnabledFeatures::Backup m_featuresBackup;
     MockWebLayerTreeView m_webLayerTreeView;
     TestWebViewClientWithLayerTreeView m_webViewClient;
     FrameTestHelpers::WebViewHelper m_helper;
 };
 
 TEST_F(WebViewImplPaintArtifactCompositorTest, AttachAndDetach)
 {
-    paintArtifactCompositor().initializeIfNeeded();
     cc::Layer* rootLayer = paintArtifactCompositor().rootLayer();
     ASSERT_TRUE(rootLayer);
 
     EXPECT_CALL(webLayerTreeView(), setRootLayer(Property(&WebLayer::ccLayer, rootLayer)));
     webViewImpl().attachPaintArtifactCompositor();
     testing::Mock::VerifyAndClearExpectations(&webLayerTreeView());
 
     EXPECT_CALL(webLayerTreeView(), clearRootLayer());
     webViewImpl().detachPaintArtifactCompositor();
     testing::Mock::VerifyAndClearExpectations(&webLayerTreeView());
 }
 
 } // namespace
 } // namespace blink