New display item caching

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 15e30d910af34e96215794ea6cef1e9d238441ea..7b590f1665656a694b6a2d4f0bff71dd45fd8dd2 100644
--- a/Source/platform/graphics/paint/DrawingRecorder.cpp
+++ b/Source/platform/graphics/paint/DrawingRecorder.cpp
@@ -19,8 +19,10 @@ DrawingRecorder::DrawingRecorder(GraphicsContext* context, const DisplayItemClie
     : m_context(context)
     , m_displayItemClient(displayItemClient)
     , m_displayItemType(displayItemType)
-    , m_bounds(bounds)
     , m_canUseCachedDrawing(false)
+#ifndef NDEBUG
+    , m_bounds(bounds)
+#endif
 {
     if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
         return;
@@ -55,7 +57,11 @@ DrawingRecorder::~DrawingRecorder()
         RefPtr<const SkPicture> picture = m_context->endRecording();
         ASSERT(!picture || !picture->approximateOpCount());
 #endif
+#ifdef NDEBUG
         displayItem = CachedDisplayItem::create(m_displayItemClient, m_displayItemType);
+#else
+        displayItem = CachedDisplayItem::create(m_displayItemClient, m_displayItemType, m_bounds);
+#endif
     } else {
         RefPtr<const SkPicture> picture = m_context->endRecording();
         if (!picture || !picture->approximateOpCount())