[SPv2] Remove PaintArtifactCompositor::initializeIfNeeded.

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.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 "platform/graphics/compositing/PaintArtifactCompositor.h"
 
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_settings.h"
 #include "cc/layers/picture_layer.h"
@@ skipping 47 matching lines @@
         return 0;
     }
 
 private:
     scoped_refptr<cc::DisplayItemList> m_ccDisplayItemList;
     gfx::Rect m_paintableRegion;
 };
 
 PaintArtifactCompositor::PaintArtifactCompositor()
 {
+    if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+        return;
+    m_rootLayer = cc::Layer::Create(cc::LayerSettings());
+    m_webLayer = adoptPtr(Platform::current()->compositorSupport()->createLayerFromCCLayer(m_rootLayer.get()));
 }
 
 PaintArtifactCompositor::~PaintArtifactCompositor()
 {
 }
 
-void PaintArtifactCompositor::initializeIfNeeded()
-{
-    ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled());
-    if (m_rootLayer)
-        return;
-
-    m_rootLayer = cc::Layer::Create(cc::LayerSettings());
-    m_webLayer = adoptPtr(Platform::current()->compositorSupport()->createLayerFromCCLayer(m_rootLayer.get()));
-}
-
 namespace {
 
 static void appendDisplayItemToCcDisplayItemList(const DisplayItem& displayItem, cc::DisplayItemList* list)
 {
     if (DisplayItem::isDrawingType(displayItem.type())) {
         const SkPicture* picture = static_cast<const DrawingDisplayItem&>(displayItem).picture();
         if (!picture)
             return;
         gfx::Rect bounds = gfx::SkIRectToRect(picture->cullRect().roundOut());
         list->CreateAndAppendItem<cc::DrawingDisplayItem>(bounds, skia::SharePtr(picture));
@@ skipping 189 matching lines @@
         if (paintChunk.knownToBeOpaque)
             layer->SetContentsOpaque(true);
         layer->SetNeedsDisplay();
 
         m_contentLayerClients.append(contentLayerClient.release());
         parent->AddChild(std::move(layer));
     }
 }
 
 } // namespace blink