Simplify subtree (now subsequence) caching

Source/platform/graphics/paint/DisplayItem.cpp

Index: Source/platform/graphics/paint/DisplayItem.cpp
diff --git a/Source/platform/graphics/paint/DisplayItem.cpp b/Source/platform/graphics/paint/DisplayItem.cpp
index 3b240a6aeb521b57c89d5411043a0726fdc21fab..2fedcc69e23eb0d09f0e954e731c7676420f836f 100644
--- a/Source/platform/graphics/paint/DisplayItem.cpp
+++ b/Source/platform/graphics/paint/DisplayItem.cpp
@@ -181,13 +181,6 @@ WTF::String DisplayItem::typeAsDebugString(Type type)
     if (isEndTransform3DType(type))
         return "End" + transform3DTypeAsDebugString(endTransform3DTypeToTransform3DType(type));
 
-    PAINT_PHASE_BASED_DEBUG_STRINGS(CachedSubtree);
-    PAINT_PHASE_BASED_DEBUG_STRINGS(BeginSubtree);
-    PAINT_PHASE_BASED_DEBUG_STRINGS(EndSubtree);
-
-    if (type == UninitializedType)
-        return "UninitializedType";
-
     switch (type) {
         DEBUG_STRING_CASE(BeginFilter);
         DEBUG_STRING_CASE(EndFilter);
@@ -201,6 +194,10 @@ WTF::String DisplayItem::typeAsDebugString(Type type)
         DEBUG_STRING_CASE(EndFixedPosition);
         DEBUG_STRING_CASE(BeginFixedPositionContainer);
         DEBUG_STRING_CASE(EndFixedPositionContainer);
+        DEBUG_STRING_CASE(BeginSubtree);
+        DEBUG_STRING_CASE(EndSubtree);
+        DEBUG_STRING_CASE(CachedSubtree);
+        DEBUG_STRING_CASE(UninitializedType);
         DEFAULT_CASE;
     }
 }