Revert "Separate preaload matching from MemoryCache"

third_party/WebKit/Source/platform/loader/fetch/PreloadKey.h

Index: third_party/WebKit/Source/platform/loader/fetch/PreloadKey.h
diff --git a/third_party/WebKit/Source/platform/loader/fetch/PreloadKey.h b/third_party/WebKit/Source/platform/loader/fetch/PreloadKey.h
deleted file mode 100644
index 189f72adab9986be6d2736a8570fbc4579a034f2..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/loader/fetch/PreloadKey.h
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2017 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.
-
-#ifndef PreloadKey_h
-#define PreloadKey_h
-
-#include "platform/loader/fetch/Resource.h"
-#include "platform/weborigin/KURL.h"
-#include "platform/weborigin/KURLHash.h"
-#include "platform/wtf/HashTraits.h"
-
-namespace blink {
-
-// PreloadKey is a key type of the prealods map in a fetch group (a.k.a.
-// blink::ResourceFetcher).
-struct PreloadKey final {
- public:
-  struct Hash {
-    STATIC_ONLY(Hash);
-
-   public:
-    static unsigned GetHash(const PreloadKey& key) {
-      return KURLHash::GetHash(key.url);
-    }
-    static bool Equal(const PreloadKey& x, const PreloadKey& y) {
-      return x == y;
-    }
-    static constexpr bool safe_to_compare_to_empty_or_deleted = false;
-  };
-
-  PreloadKey() = default;
-  PreloadKey(WTF::HashTableDeletedValueType)
-      : url(WTF::kHashTableDeletedValue) {}
-  PreloadKey(const KURL& url, Resource::Type type)
-      : url(RemoveFragmentFromUrl(url)), type(type) {}
-
-  bool IsHashTableDeletedValue() const { return url.IsHashTableDeletedValue(); }
-
-  bool operator==(const PreloadKey& x) const {
-    return url == x.url && type == x.type;
-  }
-
-  static KURL RemoveFragmentFromUrl(const KURL& src) {
-    if (!src.HasFragmentIdentifier())
-      return src;
-    KURL url = src;
-    url.RemoveFragmentIdentifier();
-    return url;
-  }
-
-  KURL url;
-  Resource::Type type = Resource::kMainResource;
-};
-
-}  // namespace blink
-
-namespace WTF {
-
-template <>
-struct DefaultHash<blink::PreloadKey> {
-  using Hash = blink::PreloadKey::Hash;
-};
-
-template <>
-struct HashTraits<blink::PreloadKey>
-    : public SimpleClassHashTraits<blink::PreloadKey> {};
-
-}  // namespace WTF
-
-#endif  // PreloadKey_h