Revert of Add MemoryCoordinatorClient

third_party/WebKit/Source/core/dom/MemoryCoordinator.h

Index: third_party/WebKit/Source/core/dom/MemoryCoordinator.h
diff --git a/third_party/WebKit/Source/core/dom/MemoryCoordinator.h b/third_party/WebKit/Source/core/dom/MemoryCoordinator.h
new file mode 100644
index 0000000000000000000000000000000000000000..104a54cd3913334723ec80256847ee6b322f3e54
--- /dev/null
+++ b/third_party/WebKit/Source/core/dom/MemoryCoordinator.h
@@ -0,0 +1,30 @@
+// 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.
+
+#ifndef MemoryCoordinator_h
+#define MemoryCoordinator_h
+
+#include "core/CoreExport.h"
+#include "public/platform/WebMemoryPressureLevel.h"
+#include "wtf/Noncopyable.h"
+
+namespace blink {
+
+// MemoryCoordinator listens to some events which could be opportunities
+// for reducing memory consumption and notifies its clients.
+class CORE_EXPORT MemoryCoordinator final {
+    WTF_MAKE_NONCOPYABLE(MemoryCoordinator);
+public:
+    static MemoryCoordinator& instance();
+
+    void onMemoryPressure(WebMemoryPressureLevel);
+
+private:
+    MemoryCoordinator();
+    ~MemoryCoordinator();
+};
+
+} // namespace blink
+
+#endif // MemoryCoordinator_h