Expose Durable Storage API to script

Source/modules/quota/DurableStorageController.cpp

Index: Source/modules/quota/DurableStorageController.cpp
diff --git a/Source/modules/quota/DurableStorageController.cpp b/Source/modules/quota/DurableStorageController.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..5d0c66f03e625fc86aa51eceb8857512576471ae
--- /dev/null
+++ b/Source/modules/quota/DurableStorageController.cpp
@@ -0,0 +1,58 @@
+// 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 "config.h"
+#include "modules/quota/DurableStorageController.h"
+
+#include "core/frame/LocalFrame.h"
+#include "platform/RuntimeEnabledFeatures.h"
+#include "public/platform/modules/quota/WebDurableStorageDispatcher.h"
+
+namespace blink {
+
+DurableStorageController::~DurableStorageController()
+{
+}
+
+void DurableStorageController::provideTo(LocalFrame& frame, WebDurableStorageDispatcher* client)
+{
+    ASSERT(RuntimeEnabledFeatures::permissionsEnabled());
+
+    DurableStorageController* controller = new DurableStorageController(frame, client);
+    WillBeHeapSupplement<LocalFrame>::provideTo(frame, supplementName(), adoptPtrWillBeNoop(controller));
+}
+
+DurableStorageController* DurableStorageController::from(LocalFrame& frame)
+{
+    return static_cast<DurableStorageController*>(WillBeHeapSupplement<LocalFrame>::from(frame, supplementName()));
+}
+
+DurableStorageController::DurableStorageController(LocalFrame& frame, WebDurableStorageDispatcher* client)
+    : LocalFrameLifecycleObserver(&frame)
+    , m_client(client)
+{
+}
+
+const char* DurableStorageController::supplementName()
+{
+    return "DurableStorageController";
+}
+
+WebDurableStorageDispatcher* DurableStorageController::client() const
+{
+    return m_client;
+}
+
+void DurableStorageController::willDetachFrameHost()
+{
+//    m_client = nullptr;
+}
+
+DEFINE_TRACE(DurableStorageController)
+{
+    LocalFrameLifecycleObserver::trace(visitor);
+    WillBeHeapSupplement<LocalFrame>::trace(visitor);
+}
+
+} // namespace blink