Remove branch on childNeedsDistributionRecalc

third_party/WebKit/Source/core/dom/CharacterData.cpp

Index: third_party/WebKit/Source/core/dom/CharacterData.cpp
diff --git a/third_party/WebKit/Source/core/dom/CharacterData.cpp b/third_party/WebKit/Source/core/dom/CharacterData.cpp
index 47bd7ca3f66fe169625864b769e1fe198805ce72..0072b04b983ef632ea64ab37590fd46f38704742 100644
--- a/third_party/WebKit/Source/core/dom/CharacterData.cpp
+++ b/third_party/WebKit/Source/core/dom/CharacterData.cpp
@@ -176,6 +176,8 @@ void CharacterData::setDataAndUpdate(const String& newData,
                                      unsigned oldLength,
                                      unsigned newLength,
                                      UpdateSource source) {
+  updateDistribution();

[hayato, 2017/02/07 09:00:01]

I am not sure this place is a good place to insert updateDistribution().
Can we insert updateDistribution() in surroundContents() (?), if that is the
only trigger to make it dirty, to avoid potential perf regression?

Is there any other caller of setDataAndUpdate()?

+
   if (source != UpdateFromParser)
     document().dataWillChange(*this);