First version of new merge algorithm (not enabled yet)

Source/platform/graphics/paint/DrawingRecorder.cpp

Index: Source/platform/graphics/paint/DrawingRecorder.cpp
diff --git a/Source/platform/graphics/paint/DrawingRecorder.cpp b/Source/platform/graphics/paint/DrawingRecorder.cpp
index fbd84c17b5547b2344da195e75f3d51d6f48ad40..f3ae3088ab9f3e80501fd94b4131fa2771214fd9 100644
--- a/Source/platform/graphics/paint/DrawingRecorder.cpp
+++ b/Source/platform/graphics/paint/DrawingRecorder.cpp
@@ -19,7 +19,6 @@ DrawingRecorder::DrawingRecorder(GraphicsContext* context, DisplayItemClient dis
     : m_context(context)
     , m_displayItemClient(displayItemClient)
     , m_displayItemType(displayItemType)
-    , m_bounds(bounds)
     , m_canUseCachedDrawing(false)
 {
     if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
@@ -60,9 +59,8 @@ DrawingRecorder::~DrawingRecorder()
     } else {
         RefPtr<const SkPicture> picture = m_context->endRecording();
         if (!picture || !picture->approximateOpCount())
-            displayItem = DisplayItem::create(m_displayItemClient, m_displayItemType);
-        else
-            displayItem = DrawingDisplayItem::create(m_displayItemClient, m_displayItemType, picture);
+            return;
+        displayItem = DrawingDisplayItem::create(m_displayItemClient, m_displayItemType, picture);
     }
 
 #ifndef NDEBUG