SVG: Escape non-ASCII characters in console messages.

Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 30 matching lines @@
 #include "core/html/HTMLElement.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/svg/LayoutSVGResourceContainer.h"
 #include "core/svg/SVGCursorElement.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGElementRareData.h"
 #include "core/svg/SVGGraphicsElement.h"
 #include "core/svg/SVGSVGElement.h"
 #include "core/svg/SVGTitleElement.h"
 #include "core/svg/SVGUseElement.h"
-
+#include "platform/JSONValues.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 using namespace SVGNames;
 
 SVGElement::SVGElement(const QualifiedName& tagName, Document& document, ConstructionType constructionType)
     : Element(tagName, &document, constructionType)
 #if ENABLE(ASSERT)
@@ skipping 117 matching lines @@
 
     // This is true whenever this is the outermost SVG, even if there are HTML elements outside it
     return !parentNode()->isSVGElement();
 }
 
 void SVGElement::reportAttributeParsingError(SVGParsingError error, const QualifiedName& name, const AtomicString& value)
 {
     if (error == NoError)
         return;
 
-    String errorString = "<" + tagName() + "> attribute " + name.toString() + "=\"" + value + "\"";
+    String errorString = "<" + tagName() + "> attribute " + name.toString() + "=" + JSONValue::quoteString(value);
     SVGDocumentExtensions& extensions = document().accessSVGExtensions();
 
     if (error == NegativeValueForbiddenError) {
         extensions.reportError("Invalid negative value for " + errorString);
         return;
     }
 
     if (error == ParsingAttributeFailedError) {
         extensions.reportError("Invalid value for " + errorString);
         return;
@@ skipping 965 matching lines @@
     Element::trace(visitor);
 }
 
 const AtomicString& SVGElement::eventParameterName()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt", AtomicString::ConstructFromLiteral));
     return evtString;
 }
 
 } // namespace blink