replace COMPILE_ASSERT with static_assert in core/editing/

Source/core/editing/HTMLInterchange.cpp

Index: Source/core/editing/HTMLInterchange.cpp
diff --git a/Source/core/editing/HTMLInterchange.cpp b/Source/core/editing/HTMLInterchange.cpp
index 2d3a2440b72ae7ccf3b5fe919e1fa6bc533fdfca..098d7c8d547b46106631f50ad170fa78bbdb0129 100644
--- a/Source/core/editing/HTMLInterchange.cpp
+++ b/Source/core/editing/HTMLInterchange.cpp
@@ -42,7 +42,7 @@ String convertHTMLTextToInterchangeFormat(const String& in, const Text& node)
         return in;
 
     const char convertedSpaceString[] = "<span class=\"" AppleConvertedSpace "\">\xA0</span>";
-    COMPILE_ASSERT((static_cast<unsigned char>('\xA0') == noBreakSpace), ConvertedSpaceStringSpaceIsNoBreakSpace);
+    static_assert((static_cast<unsigned char>('\xA0') == noBreakSpace), "\\xA0 should be non-breaking space");
 
     StringBuilder s;