WIP Durable storage, webkit side

Source/web/StorageQuotaClientImpl.cpp

Index: Source/web/StorageQuotaClientImpl.cpp
diff --git a/Source/web/StorageQuotaClientImpl.cpp b/Source/web/StorageQuotaClientImpl.cpp
index 1d1a4a21ca70588c17bd78fc270c5aa14063ac05..bbfbc65dc658cacba44e0f9679f3f263002591d2 100644
--- a/Source/web/StorageQuotaClientImpl.cpp
+++ b/Source/web/StorageQuotaClientImpl.cpp
@@ -91,4 +91,21 @@ ScriptPromise StorageQuotaClientImpl::requestPersistentQuota(ScriptState* script
     return promise;
 }
 
+ScriptPromise StorageQuotaClientImpl::requestDurability(ScriptState* scriptState)
+{
+    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    if (scriptState->executionContext()->isDocument()) {
+        Document* document = toDocument(scriptState->executionContext());
+        WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(document->frame());
+        StorageQuotaCallbacks* callbacks = StorageQuotaCallbacksImpl::create(resolver);
+        webFrame->client()->requestDurability(webFrame, callbacks);
+    } else {
+        // Requesting quota in Worker is not supported.
+        resolver->reject(DOMError::create(NotSupportedError));
+    }
+    return promise;
+}
+
 } // namespace blink