Layout: Sort items of |enum LayoutObjectType|

This CL has no behavior changes.

Change-Id: Ide79e2282dec45ce9b92fda4e09b180b0a50f3d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2444653
Auto-Submit: Kent Tamura <tkent@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813608}

third_party/blink/renderer/core/layout/layout_object.h

@@ -3290,49 +3290,47 @@ class CORE_EXPORT LayoutObject : public ImageResourceObserver,
   // The identifier name for blink::LayoutFoo should be kLayoutObjectFoo.
   enum LayoutObjectType {
     kLayoutObjectBr,
+    kLayoutObjectButton,
     kLayoutObjectCanvas,
-    kLayoutObjectFieldset,
     kLayoutObjectCounter,
+    kLayoutObjectCustomScrollbarPart,
     kLayoutObjectDetailsMarker,
     kLayoutObjectEmbeddedObject,
+    kLayoutObjectFieldset,
     kLayoutObjectFileUploadControl,
     kLayoutObjectFrame,
     kLayoutObjectFrameSet,
+    kLayoutObjectGrid,
+    kLayoutObjectIFrame,
+    kLayoutObjectImage,
     kLayoutObjectInsideListMarker,
-    kLayoutObjectTableCol,
-    kLayoutObjectNGTableCol,
     kLayoutObjectListItem,
     kLayoutObjectListMarker,
     kLayoutObjectListMarkerImage,
     kLayoutObjectMathML,
     kLayoutObjectMathMLRoot,
     kLayoutObjectMedia,
+    kLayoutObjectMultiColumnSet,
+    kLayoutObjectMultiColumnSpannerPlaceholder,
     kLayoutObjectNGBlockFlow,
     kLayoutObjectNGButton,
+    kLayoutObjectNGCustom,
     kLayoutObjectNGFieldset,
     kLayoutObjectNGFlexibleBox,
     kLayoutObjectNGGrid,
-    kLayoutObjectNGMixin,
-    kLayoutObjectNGListItem,
     kLayoutObjectNGInsideListMarker,
+    kLayoutObjectNGListItem,
+    kLayoutObjectNGMixin,
     kLayoutObjectNGOutsideListMarker,
     kLayoutObjectNGProgress,
+    kLayoutObjectNGTableCol,
     kLayoutObjectNGText,
     kLayoutObjectNGTextControlMultiLine,
     kLayoutObjectNGTextControlSingleLine,
     kLayoutObjectOutsideListMarker,
     kLayoutObjectProgress,
     kLayoutObjectQuote,
-    kLayoutObjectButton,
-    kLayoutObjectNGCustom,
-    kLayoutObjectGrid,
-    kLayoutObjectIFrame,
-    kLayoutObjectImage,
-    kLayoutObjectMultiColumnSet,
-    kLayoutObjectMultiColumnSpannerPlaceholder,
     kLayoutObjectReplaced,
-    kLayoutObjectCustomScrollbarPart,
-    kLayoutObjectView,
     kLayoutObjectRuby,
     kLayoutObjectRubyBase,
     kLayoutObjectRubyRun,
@@ -3341,29 +3339,31 @@ class CORE_EXPORT LayoutObject : public ImageResourceObserver,
     kLayoutObjectTableCaption,
     kLayoutObjectTableCell,
     kLayoutObjectTableCellLegacy,
+    kLayoutObjectTableCol,
     kLayoutObjectTableRow,
     kLayoutObjectTableSection,
-    kLayoutObjectTextControlMultiLine,
     kLayoutObjectTextControl,
+    kLayoutObjectTextControlMultiLine,
     kLayoutObjectTextControlSingleLine,
     kLayoutObjectVideo,
+    kLayoutObjectView,
     kLayoutObjectWidget,
 
     kLayoutObjectSVG, /* Keep by itself? */
-    kLayoutObjectSVGRoot,
     kLayoutObjectSVGContainer,
-    kLayoutObjectSVGTransformableContainer,
-    kLayoutObjectSVGViewportContainer,
+    kLayoutObjectSVGFilterPrimitive,
+    kLayoutObjectSVGForeignObject,
     kLayoutObjectSVGHiddenContainer,
-    kLayoutObjectSVGShape,
-    kLayoutObjectSVGText,
-    kLayoutObjectSVGTextPath,
+    kLayoutObjectSVGImage,
     kLayoutObjectSVGInline,
     kLayoutObjectSVGInlineText,
-    kLayoutObjectSVGImage,
-    kLayoutObjectSVGForeignObject,
     kLayoutObjectSVGResourceContainer,
-    kLayoutObjectSVGFilterPrimitive,
+    kLayoutObjectSVGRoot,
+    kLayoutObjectSVGShape,
+    kLayoutObjectSVGText,
+    kLayoutObjectSVGTextPath,
+    kLayoutObjectSVGTransformableContainer,
+    kLayoutObjectSVGViewportContainer,
   };
   virtual bool IsOfType(LayoutObjectType type) const {
     NOT_DESTROYED();