Make EUserSelect an enum class.

third_party/WebKit/Source/core/editing/EditingStrategy.cpp

Index: third_party/WebKit/Source/core/editing/EditingStrategy.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingStrategy.cpp b/third_party/WebKit/Source/core/editing/EditingStrategy.cpp
index 9e7638188839173387a2fb08193954032412e97e..0e9205ed0d2ab1d6b564ab3d5aec3a755e7595f9 100644
--- a/third_party/WebKit/Source/core/editing/EditingStrategy.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingStrategy.cpp
@@ -77,7 +77,7 @@ int EditingAlgorithm<Traversal>::LastOffsetForEditing(const Node* node) {
 
 template <typename Strategy>
 Node* EditingAlgorithm<Strategy>::RootUserSelectAllForNode(Node* node) {
-  if (!node || UsedValueOfUserSelect(*node) != SELECT_ALL)
+  if (!node || UsedValueOfUserSelect(*node) != EUserSelect::kAll)
     return nullptr;
   Node* parent = Strategy::Parent(*node);
   if (!parent)
@@ -89,7 +89,7 @@ Node* EditingAlgorithm<Strategy>::RootUserSelectAllForNode(Node* node) {
       parent = Strategy::Parent(*parent);
       continue;
     }
-    if (UsedValueOfUserSelect(*parent) != SELECT_ALL)
+    if (UsedValueOfUserSelect(*parent) != EUserSelect::kAll)
       break;
     candidate_root = parent;
     parent = Strategy::Parent(*candidate_root);