remove obsolete todo note for CSS property to histogram id mapping

third_party/WebKit/Source/core/frame/UseCounter.cpp

Index: third_party/WebKit/Source/core/frame/UseCounter.cpp
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.cpp b/third_party/WebKit/Source/core/frame/UseCounter.cpp
index e01e14f949f9218b1b2fe8d3f37988c683315aa0..10f1fc762dd288763faf3f6480f443c4b2995d3f 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.cpp
+++ b/third_party/WebKit/Source/core/frame/UseCounter.cpp
@@ -43,11 +43,6 @@ static int totalPagesMeasuredCSSSampleId() { return 1; }
 
 int UseCounter::m_muteCount = 0;
 
-// FIXME : This mapping should be autogenerated. This function should
-//         be moved to a separate file and a script run at build time
-//         to detect new values in CSSPropertyID and add them to the
-//         end of this function. This file would be checked in.
-//         https://code.google.com/p/chromium/issues/detail?id=234940
 int UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(int id)
 {
     CSSPropertyID cssPropertyID = static_cast<CSSPropertyID>(id);