Avoid calling lower() on inline styles in parseKeywordValue.

third_party/WebKit/Source/wtf/text/StringImpl.cpp

Index: third_party/WebKit/Source/wtf/text/StringImpl.cpp
diff --git a/third_party/WebKit/Source/wtf/text/StringImpl.cpp b/third_party/WebKit/Source/wtf/text/StringImpl.cpp
index a37127b497efe30b7cb0df628c3103f040d2077e..1fcfd6b45a2a792439a483cf9644d216b410a1b6 100644
--- a/third_party/WebKit/Source/wtf/text/StringImpl.cpp
+++ b/third_party/WebKit/Source/wtf/text/StringImpl.cpp
@@ -2292,12 +2292,10 @@ bool equalIgnoringASCIICase(const StringImpl* a, const StringImpl* b)
     return equalIgnoringASCIICase(a->characters16(), b->characters16(), length);
 }
 
-bool equalIgnoringASCIICase(const StringImpl* a, const LChar* b)
+bool equalIgnoringASCIICase(const StringImpl* a, const LChar* b, unsigned length)
 {
     if (!a || !b)
         return !a == !b;
-    size_t length = strlen(reinterpret_cast<const char*>(b));
-    CHECK_LE(length, numeric_limits<unsigned>::max());

[esprehn, 2016/05/24 22:44:26]

This isn't needed, we're not going to allocate a string with |b|, and the
comparison between an unsigned and a size_t is defined, if for some reason |b|
was actually bigger than UINT_MAX it would necessarily fail the comparison to
the length() below which unsigned.

     if (length != a->length())
         return false;
     return equalSubstringIgnoringASCIICase(a, 0, b, length);