Revert of Add MemoryCoordinatorClient

third_party/WebKit/Source/platform/MemoryCoordinator.cpp

Index: third_party/WebKit/Source/platform/MemoryCoordinator.cpp
diff --git a/third_party/WebKit/Source/platform/MemoryCoordinator.cpp b/third_party/WebKit/Source/platform/MemoryCoordinator.cpp
deleted file mode 100644
index 96fa073243f44e8c6af25ce2f388a258c1fd6eae..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/MemoryCoordinator.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-// 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 "platform/MemoryCoordinator.h"
-
-#include "platform/TraceEvent.h"
-#include "platform/fonts/FontCache.h"
-#include "platform/graphics/ImageDecodingStore.h"
-#include "platform/heap/Heap.h"
-#include "wtf/allocator/Partitions.h"
-
-namespace blink {
-
-DEFINE_TRACE(MemoryCoordinatorClient)
-{
-}
-
-MemoryCoordinator& MemoryCoordinator::instance()
-{
-    DEFINE_STATIC_LOCAL(MemoryCoordinator, instance, ());
-    return instance;
-}
-
-MemoryCoordinator::MemoryCoordinator()
-{
-}
-
-MemoryCoordinator::~MemoryCoordinator()
-{
-}
-
-void MemoryCoordinator::registerClient(MemoryCoordinatorClient* client)
-{
-    DCHECK(isMainThread());
-    DCHECK(client);
-    DCHECK(!m_clients.contains(client));
-    m_clients.add(client);
-}
-
-void MemoryCoordinator::unregisterClient(MemoryCoordinatorClient* client)
-{
-    DCHECK(isMainThread());
-    m_clients.remove(client);
-}
-
-void MemoryCoordinator::purgeMemory()
-{
-    for (auto& client : m_clients)
-        client->purgeMemory();
-    WTF::Partitions::decommitFreeableMemory();
-}
-
-void MemoryCoordinator::onMemoryPressure(WebMemoryPressureLevel level)
-{
-    TRACE_EVENT0("blink", "MemoryCoordinator::onMemoryPressure");
-    for (auto& client : m_clients)
-        client->onMemoryPressure(level);
-    if (level == WebMemoryPressureLevelCritical) {
-        // Clear the image cache.
-        // TODO(tasak|bashi): Make ImageDecodingStore and FontCache be
-        // MemoryCoordinatorClients rather than clearing caches here.
-        ImageDecodingStore::instance().clear();
-        FontCache::fontCache()->invalidate();
-    }
-    WTF::Partitions::decommitFreeableMemory();
-}
-
-DEFINE_TRACE(MemoryCoordinator)
-{
-    visitor->trace(m_clients);
-}
-
-} // namespace blink