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 698 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(request_->Url());
   request.SetRequestContext(request_->Context());
   request.SetHTTPMethod(request_->Method());
   request.SetFetchRequestMode(request_->Mode());
   request.SetFetchCredentialsMode(request_->Credentials());
-  const Vector<std::unique_ptr<FetchHeaderList::Header>>& list =
-      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 : request_->HeaderList()->List()) {
+    request.AddHTTPHeaderField(AtomicString(header.first),
+                               AtomicString(header.second));
   }
 
   if (request_->Method() != HTTPNames::GET &&
       request_->Method() != HTTPNames::HEAD) {
     if (request_->Buffer())
       request.SetHTTPBody(request_->Buffer()->DrainAsFormData());
     if (request_->AttachedCredential())
       request.SetAttachedCredential(request_->AttachedCredential());
   }
   request.SetFetchRedirectMode(request_->Redirect());
@@ skipping 189 matching lines @@
   loaders_.erase(loader);
   loader->Dispose();
 }
 
 DEFINE_TRACE(FetchManager) {
   visitor->Trace(loaders_);
   ContextLifecycleObserver::Trace(visitor);
 }
 
 }  // namespace blink