Service Worker: Add ServiceWorkerContainer.getRegistrations() method.

Source/modules/serviceworkers/ServiceWorkerContainer.cpp

Index: Source/modules/serviceworkers/ServiceWorkerContainer.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
index 612d37b84959a9cb12573e8e280c148853c39798..481066d16992ba64604e2992becddde3ad7fdde8 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
@@ -218,6 +218,36 @@ ScriptPromise ServiceWorkerContainer::getRegistration(ScriptState* scriptState,
     return promise;
 }
 
+ScriptPromise ServiceWorkerContainer::getRegistrations(ScriptState* scriptState)
+{
+    ASSERT(RuntimeEnabledFeatures::serviceWorkerEnabled());

[falken, 2015/05/25 00:43:02]

We should not add this, since we'd like to remove the serviceWorkerEnabled()
function.

+    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    if (!m_provider) {
+        resolver->reject(DOMException::create(InvalidStateError, "Failed to get ServiceWorkerRegistration objects: The document is in an invalid state."));
+        return promise;
+    }
+
+    ExecutionContext* executionContext = scriptState->executionContext();
+    RefPtr<SecurityOrigin> documentOrigin = executionContext->securityOrigin();
+    String errorMessage;
+    if (!executionContext->isPrivilegedContext(errorMessage)) {
+        resolver->reject(DOMException::create(NotSupportedError, errorMessage));
+        return promise;
+    }
+
+    KURL pageURL = KURL(KURL(), documentOrigin->toString());
+    if (!pageURL.protocolIsInHTTPFamily()) {
+        resolver->reject(DOMException::create(SecurityError, "Failed to get ServiceWorkerRegistration objects: The URL protocol of the current origin ('" + documentOrigin->toString() + "') is not supported."));
+        return promise;
+    }
+
+    m_provider->getRegistrations(new CallbackPromiseAdapter<ServiceWorkerRegistrationArray, ServiceWorkerError>(resolver));
+
+    return promise;
+}
+
 ServiceWorkerContainer::ReadyProperty* ServiceWorkerContainer::createReadyProperty()
 {
     return new ReadyProperty(executionContext(), this, ReadyProperty::Ready);