reset VisibleSelection at the Undo command.

Source/core/dom/Range.cpp

Index: Source/core/dom/Range.cpp
diff --git a/Source/core/dom/Range.cpp b/Source/core/dom/Range.cpp
index 75b7fd88993465bc3f2977676ec2844ad8ec8c91..15a140adf20a4d1662d9ebe2da626433dafc99e1 100644
--- a/Source/core/dom/Range.cpp
+++ b/Source/core/dom/Range.cpp
@@ -548,7 +548,7 @@ static inline Node* childOfCommonRootBeforeOffset(Node* container, unsigned offs
     return container;
 }
 
-static inline unsigned lengthOfContentsInNode(Node* node)
+unsigned Range::lengthOfContentsInNode(const Node* node)

[Yuta Kitamura, 2014/06/05 08:37:55]

I don't think this function should be exposed as a member of
Range. It should probably belong to Node.

[yoichio, 2014/06/06 04:49:21]

Done.

 {
     // This switch statement must be consistent with that of Range::processContentsBetweenOffsets.
     switch (node->nodeType()) {