Fetch API: Stop lowercasing header names.

third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp

Index: third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp b/third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp
index 6509cae9ddff567538111d2e5515eae8d6da95d5..8880293a0189532c85c2ea922fff14822e4504c6 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchResponseData.cpp
@@ -82,11 +82,10 @@ FetchResponseData* FetchResponseData::createBasicFilteredResponse() const {
   FetchResponseData* response =
       new FetchResponseData(BasicType, m_status, m_statusMessage);
   response->setURLList(m_urlList);
-  for (size_t i = 0; i < m_headerList->size(); ++i) {
-    const FetchHeaderList::Header* header = m_headerList->list()[i].get();
-    if (FetchUtils::isForbiddenResponseHeaderName(header->first))
+  for (const auto& header : m_headerList->list()) {
+    if (FetchUtils::isForbiddenResponseHeaderName(header.first))
       continue;
-    response->m_headerList->append(header->first, header->second);
+    response->m_headerList->append(header.first, header.second);
   }
   response->m_buffer = m_buffer;
   response->m_mimeType = m_mimeType;
@@ -118,16 +117,15 @@ FetchResponseData* FetchResponseData::createCORSFilteredResponse(
   FetchResponseData* response =
       new FetchResponseData(CORSType, m_status, m_statusMessage);
   response->setURLList(m_urlList);
-  for (size_t i = 0; i < m_headerList->size(); ++i) {
-    const FetchHeaderList::Header* header = m_headerList->list()[i].get();
-    const String& name = header->first;
+  for (const auto& header : m_headerList->list()) {
+    const String& name = header.first;
     const bool explicitlyExposed = exposedHeaders.contains(name);
     if (isOnAccessControlResponseHeaderWhitelist(name) ||
         (explicitlyExposed &&
          !FetchUtils::isForbiddenResponseHeaderName(name))) {
       if (explicitlyExposed)
         response->m_corsExposedHeaderNames.insert(name);
-      response->m_headerList->append(name, header->second);
+      response->m_headerList->append(name, header.second);
     }
   }
   response->m_buffer = m_buffer;
@@ -270,9 +268,8 @@ void FetchResponseData::populateWebServiceWorkerResponse(
   response.setCacheStorageCacheName(cacheStorageCacheName());
   response.setCorsExposedHeaderNames(
       headerSetToWebVector(m_corsExposedHeaderNames));
-  for (size_t i = 0; i < headerList()->size(); ++i) {
-    const FetchHeaderList::Header* header = headerList()->list()[i].get();
-    response.appendHeader(header->first, header->second);
+  for (const auto& header : headerList()->list()) {
+    response.appendHeader(header.first, header.second);
   }
 }