FYI: Compile fixes when always using a local for method return value

Source/core/testing/Internals.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 161 matching lines @@
 
     PassRefPtrWillBeRawPtr<DOMPoint> touchPositionAdjustedToBestClickableNode(long x, long y, long width, long height, Document*, ExceptionState&);
     Node* touchNodeAdjustedToBestClickableNode(long x, long y, long width, long height, Document*, ExceptionState&);
     PassRefPtrWillBeRawPtr<DOMPoint> touchPositionAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document*, ExceptionState&);
     Node* touchNodeAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document*, ExceptionState&);
     PassRefPtrWillBeRawPtr<ClientRect> bestZoomableAreaForTouchPoint(long x, long y, long width, long height, Document*, ExceptionState&);
 
     int lastSpellCheckRequestSequence(Document*, ExceptionState&);
     int lastSpellCheckProcessedSequence(Document*, ExceptionState&);
 
-    Vector<AtomicString> userPreferredLanguages() const;
+    Vector<String> userPreferredLanguages() const;
     void setUserPreferredLanguages(const Vector<String>&);
 
     unsigned activeDOMObjectCount(Document*, ExceptionState&);
     unsigned wheelEventHandlerCount(Document*, ExceptionState&);
     unsigned scrollEventHandlerCount(Document*, ExceptionState&);
     unsigned touchEventHandlerCount(Document*, ExceptionState&);
     PassRefPtrWillBeRawPtr<LayerRectList> touchEventTargetLayerRects(Document*, ExceptionState&);
 
     // This is used to test rect based hit testing like what's done on touch screens.
     PassRefPtrWillBeRawPtr<StaticNodeList> nodesFromRect(Document*, int x, int y, unsigned topPadding, unsigned rightPadding,
@@ skipping 36 matching lines @@
 
     void garbageCollectDocumentResources(Document*, ExceptionState&) const;
     void evictAllResources() const;
 
     unsigned numberOfLiveNodes() const;
     unsigned numberOfLiveDocuments() const;
     String dumpRefCountedInstanceCounts() const;
     Vector<String> consoleMessageArgumentCounts(Document*) const;
     PassRefPtrWillBeRawPtr<LocalDOMWindow> openDummyInspectorFrontend(const String& url);
     void closeDummyInspectorFrontend();
-    Vector<unsigned long> setMemoryCacheCapacities(unsigned long minDeadBytes, unsigned long maxDeadBytes, unsigned long totalBytes);
+    Vector<unsigned> setMemoryCacheCapacities(unsigned long minDeadBytes, unsigned long maxDeadBytes, unsigned long totalBytes);
     void setInspectorResourcesDataSizeLimits(int maximumResourcesContentSize, int maximumSingleResourceContentSize, ExceptionState&);
 
     String counterValue(Element*);
 
     int pageNumber(Element*, float pageWidth = 800, float pageHeight = 600);
     Vector<String> shortcutIconURLs(Document*) const;
     Vector<String> allIconURLs(Document*) const;
 
     int numberOfPages(float pageWidthInPixels = 800, float pageHeightInPixels = 600);
     String pageProperty(String, int, ExceptionState& = ASSERT_NO_EXCEPTION) const;
@@ skipping 80 matching lines @@
     PassRefPtrWillBeRawPtr<ClientRectList> annotatedRegions(Document*, bool draggable, ExceptionState&);
 
     DocumentMarker* markerAt(Node*, const String& markerType, unsigned index, ExceptionState&);
     RefPtrWillBeMember<InternalRuntimeFlags> m_runtimeFlags;
     RefPtrWillBeMember<InternalProfilers> m_profilers;
 };
 
 } // namespace WebCore
 
 #endif