Reland: Add MemoryCoordinatorClient

third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp

Index: third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
diff --git a/third_party/WebKit/Source/web/WebMemoryCoordinator.cpp b/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
similarity index 66%
rename from third_party/WebKit/Source/web/WebMemoryCoordinator.cpp
rename to third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
index 225ee6b90a0ddd70b7ab4bfc33113644e8cef0ed..3ff71f08b5ac32dd515bb9d0a43fbe199e7ad762 100644
--- a/third_party/WebKit/Source/web/WebMemoryCoordinator.cpp
+++ b/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
@@ -2,10 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "public/web/WebMemoryCoordinator.h"
+#include "public/platform/WebMemoryCoordinator.h"
 
-#include "core/dom/MemoryCoordinator.h"
-#include "core/page/Page.h"
+#include "platform/MemoryCoordinator.h"
 
 namespace blink {
 
@@ -14,4 +13,9 @@ void WebMemoryCoordinator::onMemoryPressure(WebMemoryPressureLevel pressureLevel
     MemoryCoordinator::instance().onMemoryPressure(pressureLevel);
 }
 
+void WebMemoryCoordinator::purgeMemory()
+{
+    MemoryCoordinator::instance().purgeMemory();
+}
+
 } // namespace blink