Introduce composed tree version of enclosingNodeOfType()

Source/core/editing/EditingUtilities.h

Index: Source/core/editing/EditingUtilities.h
diff --git a/Source/core/editing/EditingUtilities.h b/Source/core/editing/EditingUtilities.h
index 0a396dfb4de92cbcd2db1430ccc0a5b5133b12ba..9a9866bef17a312042e8f86a72fc3ee1401bae94 100644
--- a/Source/core/editing/EditingUtilities.h
+++ b/Source/core/editing/EditingUtilities.h
@@ -78,7 +78,8 @@ Element* associatedElementOf(const Position&);
 Node* enclosingEmptyListItem(const VisiblePosition&);
 Element* enclosingAnchorElement(const Position&);
 Element* enclosingElementWithTag(const Position&, const QualifiedName&);
-Node* enclosingNodeOfType(const Position&, bool (*nodeIsOfType)(const Node*), EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
+CORE_EXPORT Node* enclosingNodeOfType(const Position&, bool (*nodeIsOfType)(const Node*), EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
+CORE_EXPORT Node* enclosingNodeOfType(const PositionInComposedTree&, bool (*nodeIsOfType)(const Node*), EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
 
 HTMLSpanElement* tabSpanElement(const Node*);
 Element* isLastPositionBeforeTable(const VisiblePosition&);
@@ -128,7 +129,7 @@ inline bool canHaveChildrenForEditing(const Node* node)
 }
 
 bool isAtomicNode(const Node*);
-bool isBlock(const Node*);
+CORE_EXPORT bool isBlock(const Node*);

[hajimehoshi, 2015/08/26 04:50:53]

Is this a global function? I guess the name isBlock is too general. How about
renaming in another CL?

[yosin_UTC9, 2015/08/26 04:53:13]

Good catch. I'll rename it to another name, e.g. isBlockElement(Node*).
Still short?

[hajimehoshi, 2015/08/26 04:55:28]

isBlockElement would be much better (as long as an element named 'block' doesn't
exist).

 bool isInline(const Node*);
 bool isTabHTMLSpanElement(const Node*);
 bool isTabHTMLSpanElementTextNode(const Node*);