1 files changed, 18 insertions, 17 deletions

diff --git a/Source/WebCore/dom/NamedFlowCollection.cpp b/Source/WebCore/dom/NamedFlowCollection.cpp
index c87981671..272954811 100644
--- a/Source/WebCore/dom/NamedFlowCollection.cpp
+++ b/Source/WebCore/dom/NamedFlowCollection.cpp
@@ -47,11 +47,11 @@ Vector<RefPtr<WebKitNamedFlow>> NamedFlowCollection::namedFlows()
 {
     Vector<RefPtr<WebKitNamedFlow>> namedFlows;
 
-    for (NamedFlowSet::iterator it = m_namedFlows.begin(); it != m_namedFlows.end(); ++it) {
-        if ((*it)->flowState() == WebKitNamedFlow::FlowStateNull)
+    for (auto& namedFlow : m_namedFlows) {
+        if (namedFlow->flowState() == WebKitNamedFlow::FlowStateNull)
             continue;
 
-        namedFlows.append(RefPtr<WebKitNamedFlow>(*it));
+        namedFlows.append(RefPtr<WebKitNamedFlow>(namedFlow));
     }
 
     return namedFlows;
@@ -61,27 +61,27 @@ WebKitNamedFlow* NamedFlowCollection::flowByName(const String& flowName)
 {
     NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
     if (it == m_namedFlows.end() || (*it)->flowState() == WebKitNamedFlow::FlowStateNull)
-        return 0;
+        return nullptr;
 
     return *it;
 }
 
-PassRefPtr<WebKitNamedFlow> NamedFlowCollection::ensureFlowWithName(const String& flowName)
+Ref<WebKitNamedFlow> NamedFlowCollection::ensureFlowWithName(const String& flowName)
 {
     NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
     if (it != m_namedFlows.end()) {
         WebKitNamedFlow* namedFlow = *it;
         ASSERT(namedFlow->flowState() == WebKitNamedFlow::FlowStateNull);
 
-        return namedFlow;
+        return *namedFlow;
     }
 
-    RefPtr<WebKitNamedFlow> newFlow = WebKitNamedFlow::create(this, flowName);
+    RefPtr<WebKitNamedFlow> newFlow = WebKitNamedFlow::create(*this, flowName);
     m_namedFlows.add(newFlow.get());
 
-    InspectorInstrumentation::didCreateNamedFlow(document(), newFlow.get());
+    InspectorInstrumentation::didCreateNamedFlow(document(), *newFlow);
 
-    return newFlow.release();
+    return newFlow.releaseNonNull();
 }
 
 void NamedFlowCollection::discardNamedFlow(WebKitNamedFlow* namedFlow)
@@ -93,7 +93,7 @@ void NamedFlowCollection::discardNamedFlow(WebKitNamedFlow* namedFlow)
     ASSERT(namedFlow->flowState() == WebKitNamedFlow::FlowStateNull);
     ASSERT(m_namedFlows.contains(namedFlow));
 
-    InspectorInstrumentation::willRemoveNamedFlow(document(), namedFlow);
+    InspectorInstrumentation::willRemoveNamedFlow(document(), *namedFlow);
 
     m_namedFlows.remove(namedFlow);
 }
@@ -101,16 +101,17 @@ void NamedFlowCollection::discardNamedFlow(WebKitNamedFlow* namedFlow)
 Document* NamedFlowCollection::document() const
 {
     ScriptExecutionContext* context = ContextDestructionObserver::scriptExecutionContext();
-    return toDocument(context);
+    return downcast<Document>(context);
 }
 
-PassRefPtr<DOMNamedFlowCollection> NamedFlowCollection::createCSSOMSnapshot()
+Ref<DOMNamedFlowCollection> NamedFlowCollection::createCSSOMSnapshot()
 {
-    Vector<WebKitNamedFlow*> createdFlows;
-    for (NamedFlowSet::iterator it = m_namedFlows.begin(); it != m_namedFlows.end(); ++it)
-        if ((*it)->flowState() == WebKitNamedFlow::FlowStateCreated)
-            createdFlows.append(*it);
-    return DOMNamedFlowCollection::create(createdFlows);
+    Vector<Ref<WebKitNamedFlow>> createdFlows;
+    for (auto& namedFlow : m_namedFlows) {
+        if (namedFlow->flowState() == WebKitNamedFlow::FlowStateCreated)
+            createdFlows.append(*namedFlow);
+    }
+    return DOMNamedFlowCollection::create(WTFMove(createdFlows));
 }
 
 // The HashFunctions object used by the HashSet to compare between NamedFlows.