Fetch API: Stop lowercasing header names.

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/fetch/FetchManager.h"
 
 #include <memory>
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
@@ skipping 708 matching lines @@
 
   // "1. Let |HTTPRequest| be a copy of |request|, except that |HTTPRequest|'s
   //  body is a tee of |request|'s body."
   // We use ResourceRequest class for HTTPRequest.
   // FIXME: Support body.
   ResourceRequest request(m_request->url());
   request.setRequestContext(m_request->context());
   request.setHTTPMethod(m_request->method());
   request.setFetchRequestMode(m_request->mode());
   request.setFetchCredentialsMode(m_request->credentials());
-  const Vector<std::unique_ptr<FetchHeaderList::Header>>& list =
-      m_request->headerList()->list();
-  for (size_t i = 0; i < list.size(); ++i) {
-    request.addHTTPHeaderField(AtomicString(list[i]->first),
-                               AtomicString(list[i]->second));
+  for (const auto& header : m_request->headerList()->list()) {
+    request.addHTTPHeaderField(AtomicString(header.first),
+                               AtomicString(header.second));
   }
 
   if (m_request->method() != HTTPNames::GET &&
       m_request->method() != HTTPNames::HEAD) {
     if (m_request->buffer())
       request.setHTTPBody(m_request->buffer()->drainAsFormData());
     if (m_request->attachedCredential())
       request.setAttachedCredential(m_request->attachedCredential());
   }
   request.setFetchRedirectMode(m_request->redirect());
@@ skipping 188 matching lines @@
   m_loaders.erase(loader);
   loader->dispose();
 }
 
 DEFINE_TRACE(FetchManager) {
   visitor->trace(m_loaders);
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink