Loading: move core/fetch to platform/loader/fetch

third_party/WebKit/Source/core/fetch/ResourceClientWalker.h

-/*
-    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
-    Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
-    Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-
-    This class provides all functionality needed for loading images, style
-    sheets and html pages from the web. It has a memory cache for these objects.
-*/
-
-#ifndef ResourceClientWalker_h
-#define ResourceClientWalker_h
-
-#include "core/fetch/ResourceClient.h"
-#include "platform/heap/Handle.h"
-#include "wtf/Allocator.h"
-
-namespace blink {
-
-// Call this "walker" instead of iterator so people won't expect Qt or STL-style
-// iterator interface. Just keep calling next() on this. It's safe from
-// deletions of items.
-template <typename T>
-class ResourceClientWalker {
-  STACK_ALLOCATED();
-
- public:
-  explicit ResourceClientWalker(
-      const HeapHashCountedSet<WeakMember<ResourceClient>>& set)
-      : m_clientSet(set) {
-    copyToVector(m_clientSet, m_clientVector);
-  }
-
-  T* next() {
-    size_t size = m_clientVector.size();
-    while (m_index < size) {
-      ResourceClient* next = m_clientVector[m_index++];
-      DCHECK(next);
-      if (m_clientSet.contains(next)) {
-        DCHECK(T::isExpectedType(next));
-        return static_cast<T*>(next);
-      }
-    }
-    return nullptr;
-  }
-
- private:
-  const HeapHashCountedSet<WeakMember<ResourceClient>>& m_clientSet;
-  HeapVector<Member<ResourceClient>> m_clientVector;
-  size_t m_index = 0;
-};
-
-}  // namespace blink
-
-#endif