Combine 4 bools into GeometryInfoFlags.

third_party/WebKit/Source/core/layout/LayoutGeometryMapStep.h

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 
 #include "platform/geometry/LayoutSize.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "wtf/Allocator.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class LayoutObject;
 
+enum GeometryInfoFlag {
+    AccumulatingTransform = 1,

[leviw_travelin_and_unemployed, 2016/02/16 01:41:57]

Nit: bitshift or hex for clarity?

[mstensho (USE GERRIT), 2016/02/16 10:15:04]

I considered octal, but went with the bitshift solution. :)

Done.

+    IsNonUniform = 2, // Mapping depends on the input point, e.g. because of CSS columns.
+    IsFixedPosition = 4,
+    HasTransform = 8
+};
+typedef unsigned GeometryInfoFlags;
+
 // Stores data about how to map from one layoutObject to its container.
 struct LayoutGeometryMapStep {
     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
     LayoutGeometryMapStep(const LayoutGeometryMapStep& o)
         : m_layoutObject(o.m_layoutObject)
         , m_offset(o.m_offset)
         , m_offsetForFixedPosition(o.m_offsetForFixedPosition)
-        , m_accumulatingTransform(o.m_accumulatingTransform)
-        , m_isNonUniform(o.m_isNonUniform)
-        , m_isFixedPosition(o.m_isFixedPosition)
-        , m_hasTransform(o.m_hasTransform)
+        , m_flags(o.m_flags)
     {
         ASSERT(!o.m_transform);
     }
-    LayoutGeometryMapStep(const LayoutObject* layoutObject, bool accumulatingTransform, bool isNonUniform, bool isFixedPosition, bool hasTransform)
+    LayoutGeometryMapStep(const LayoutObject* layoutObject, GeometryInfoFlags flags)
         : m_layoutObject(layoutObject)
-        , m_accumulatingTransform(accumulatingTransform)
-        , m_isNonUniform(isNonUniform)
-        , m_isFixedPosition(isFixedPosition)
-        , m_hasTransform(hasTransform)
+        , m_flags(flags)
     {
     }
     const LayoutObject* m_layoutObject;
     LayoutSize m_offset;
     OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null.
     LayoutSize m_offsetForFixedPosition;
-    bool m_accumulatingTransform;
-    bool m_isNonUniform; // Mapping depends on the input point, e.g. because of CSS columns.
-    bool m_isFixedPosition;
-    bool m_hasTransform;
+    GeometryInfoFlags m_flags;
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep);
 
 #endif // LayoutGeometryMapStep_h