Move WebCacheMemoryDumpProvider to platform

third_party/WebKit/Source/core/fetch/WebCacheMemoryDumpProvider.cpp

-// Copyright 2015 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 "core/fetch/WebCacheMemoryDumpProvider.h"
-
-#include "core/fetch/MemoryCache.h"
-#include "public/platform/WebMemoryAllocatorDump.h"
-#include "public/platform/WebProcessMemoryDump.h"
-
-namespace blink {
-
-WebCacheMemoryDumpProvider* WebCacheMemoryDumpProvider::instance()
-{
-    DEFINE_STATIC_LOCAL(WebCacheMemoryDumpProvider, instance, ());
-    return &instance;
-}
-
-bool WebCacheMemoryDumpProvider::onMemoryDump(WebMemoryDumpLevelOfDetail levelOfDetail, WebProcessMemoryDump* memoryDump)
-{
-    ASSERT(isMainThread());
-    if (m_memoryCache)
-        m_memoryCache->onMemoryDump(levelOfDetail, memoryDump);
-    return true;
-}
-
-WebCacheMemoryDumpProvider::WebCacheMemoryDumpProvider()
-{
-}
-
-WebCacheMemoryDumpProvider::~WebCacheMemoryDumpProvider()
-{
-}
-
-} // namespace blink