Revalidation header blacklisting should be case-insensitive.

Source/core/fetch/Resource.cpp

Index: Source/core/fetch/Resource.cpp
diff --git a/Source/core/fetch/Resource.cpp b/Source/core/fetch/Resource.cpp
index 148605adae15af8fe386220ccd962e08b84d3da6..0a38f04d7e4e67cb8a21fd026b2a700825006c6c 100644
--- a/Source/core/fetch/Resource.cpp
+++ b/Source/core/fetch/Resource.cpp
@@ -81,11 +81,11 @@ const char* const headerPrefixesToIgnoreAfterRevalidation[] = {
 static inline bool shouldUpdateHeaderAfterRevalidation(const AtomicString& header)
 {
     for (size_t i = 0; i < WTF_ARRAY_LENGTH(headersToIgnoreAfterRevalidation); i++) {
-        if (header == headersToIgnoreAfterRevalidation[i])
+        if (equalIgnoringCase(header, headersToIgnoreAfterRevalidation[i]))
             return false;
     }
     for (size_t i = 0; i < WTF_ARRAY_LENGTH(headerPrefixesToIgnoreAfterRevalidation); i++) {
-        if (header.startsWith(headerPrefixesToIgnoreAfterRevalidation[i]))
+        if (header.startsWith(headerPrefixesToIgnoreAfterRevalidation[i], false))
             return false;
     }
     return true;