Throw an exception when denying access to 'Frame's 'location' setter.

Source/core/dom/DOMException.h

Index: Source/core/dom/DOMException.h
diff --git a/Source/core/dom/DOMException.h b/Source/core/dom/DOMException.h
index ca96483b507e852dc1697effc8f3ae8dfea6a799..9e1f103eb997987bcf78457a3c8afd2880b093af 100644
--- a/Source/core/dom/DOMException.h
+++ b/Source/core/dom/DOMException.h
@@ -40,24 +40,34 @@ typedef int ExceptionCode;
 
 class DOMException : public RefCounted<DOMException>, public ScriptWrappable {
 public:
-    static PassRefPtr<DOMException> create(ExceptionCode, const String& message = String());
+    static PassRefPtr<DOMException> create(ExceptionCode, const String& sanitizedMessage = String(), const String& unsanitizedMessage = String());
 
     unsigned short code() const { return m_code; }
     String name() const { return m_name; }
-    String message() const { return m_message; }
 
+    // This is the message that's exposed to JavaScript: if a sanitized message is present, we prefer it.
+    String message() const { return !sanitizedMessage().isEmpty() ? sanitizedMessage() : unsanitizedMessage(); }
     String toString() const;
 
+    // This is the message that's exposed to the console: if an unsanitized message is present, we prefer it.
+    String messageForConsole() const { return !unsanitizedMessage().isEmpty() ? unsanitizedMessage() : sanitizedMessage(); }
+    String toStringForConsole() const;
+
     static String getErrorName(ExceptionCode);
     static String getErrorMessage(ExceptionCode);
     static unsigned short getLegacyErrorCode(ExceptionCode);
 
 private:
-    DOMException(unsigned short m_code, const String& name, const String& message);
+    DOMException(unsigned short m_code, const String& name, const String& sanitizedMessage, const String& unsanitizedMessage);
+
+    // These methods are not (and must not be) exposed to JavaScript.
+    String unsanitizedMessage() const { return m_unsanitizedMessage; }
+    String sanitizedMessage() const { return m_sanitizedMessage; }
 
     unsigned short m_code;
     String m_name;
-    String m_message;
+    String m_sanitizedMessage;
+    String m_unsanitizedMessage;
 };
 
 } // namespace WebCore