Fetch API: Stop lowercasing header names.

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

Index: third_party/WebKit/Source/modules/fetch/Headers.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/Headers.cpp b/third_party/WebKit/Source/modules/fetch/Headers.cpp
index 0b2b43392e82096c0f1a494c59ff116825db99d5..1670508e31b086249c01f97a86f5e51c9f6837df 100644
--- a/third_party/WebKit/Source/modules/fetch/Headers.cpp
+++ b/third_party/WebKit/Source/modules/fetch/Headers.cpp
@@ -9,9 +9,6 @@
 #include "bindings/core/v8/V8IteratorResultValue.h"
 #include "core/dom/Iterator.h"
 #include "platform/loader/fetch/FetchUtils.h"
-#include "wtf/NotFound.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
@@ -22,9 +19,7 @@ class HeadersIterationSource final
     : public PairIterable<String, String>::IterationSource {
  public:
   explicit HeadersIterationSource(const FetchHeaderList* headers)
-      : m_headers(headers->clone()), m_current(0) {
-    m_headers->sortAndCombine();
-  }
+      : m_headers(headers->sortAndCombine()), m_current(0) {}
 
   bool next(ScriptState* scriptState,
             String& key,
@@ -33,22 +28,21 @@ class HeadersIterationSource final
     // This simply advances an index and returns the next value if any; the
     // iterated list is not exposed to script so it will never be mutated
     // during iteration.
-    if (m_current >= m_headers->size())
+    if (m_current >= m_headers.size())
       return false;
 
-    const FetchHeaderList::Header& header = m_headers->entry(m_current++);
+    const FetchHeaderList::Header& header = m_headers.at(m_current++);
     key = header.first;
     value = header.second;
     return true;
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() {
-    visitor->trace(m_headers);
     PairIterable<String, String>::IterationSource::trace(visitor);
   }
 
  private:
-  const Member<FetchHeaderList> m_headers;
+  Vector<std::pair<String, String>> m_headers;
   size_t m_current;
 };
 
@@ -257,9 +251,8 @@ void Headers::fillWith(const Headers* object, ExceptionState& exceptionState) {
   //     |headerListCopy| and then for each |header| in |headerListCopy|,
   //     retaining order, append header's |name|/|header|'s value to
   //     |headers|. Rethrow any exception."
-  for (size_t i = 0; i < object->m_headerList->list().size(); ++i) {
-    append(object->m_headerList->list()[i]->first,
-           object->m_headerList->list()[i]->second, exceptionState);
+  for (const auto& header : object->m_headerList->list()) {
+    append(header.first, header.second, exceptionState);
     if (exceptionState.hadException())
       return;
   }