Refactor DrawingRecorders to check for cached drawings earlier

Source/platform/graphics/paint/DrawingRecorder.h

Index: Source/platform/graphics/paint/DrawingRecorder.h
diff --git a/Source/platform/graphics/paint/DrawingRecorder.h b/Source/platform/graphics/paint/DrawingRecorder.h
index bbc14bf4fb65480d2648404dcf36ba027b035970..872c1f75bcacf82f308f59c2099a8ae98f5b0f32 100644
--- a/Source/platform/graphics/paint/DrawingRecorder.h
+++ b/Source/platform/graphics/paint/DrawingRecorder.h
@@ -20,17 +20,11 @@ class GraphicsContext;
 
 class PLATFORM_EXPORT DrawingRecorder {
 public:
+    static bool useCachedDrawingIfPossible(GraphicsContext&, const DisplayItemClientWrapper&, DisplayItem::Type);
+
     DrawingRecorder(GraphicsContext&, const DisplayItemClientWrapper&, DisplayItem::Type, const FloatRect& cullRect);
     ~DrawingRecorder();
 
-    bool canUseCachedDrawing() const
-    {
-#if ENABLE(ASSERT)
-        m_checkedCachedDrawing = true;
-#endif
-        return m_canUseCachedDrawing;
-    }
-
 #if ENABLE(ASSERT)
     void setUnderInvalidationCheckingMode(DrawingDisplayItem::UnderInvalidationCheckingMode mode) { m_underInvalidationCheckingMode = mode; }
 #endif
@@ -39,9 +33,7 @@ private:
     GraphicsContext& m_context;
     DisplayItemClientWrapper m_displayItemClient;
     const DisplayItem::Type m_displayItemType;
-    bool m_canUseCachedDrawing;
 #if ENABLE(ASSERT)
-    mutable bool m_checkedCachedDrawing;
     size_t m_displayItemPosition;
     DrawingDisplayItem::UnderInvalidationCheckingMode m_underInvalidationCheckingMode;
 #endif