Move btoa() / atob() implementation out of DOMWindow

Source/core/page/DOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/page/DOMWindow.h"
 
 #include "wtf/MainThread.h"
 #include "wtf/MathExtras.h"
-#include "wtf/text/Base64.h"
 #include "wtf/text/WTFString.h"
 #include <algorithm>
 #include "RuntimeEnabledFeatures.h"
 #include "bindings/v8/ScriptCallStackFactory.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/SerializedScriptValue.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/CSSRuleList.h"
 #include "core/css/DOMWindowCSS.h"
 #include "core/css/MediaQueryList.h"
@@ skipping 893 matching lines @@
     if (!page)
         return String();
 
     String returnValue;
     if (page->chrome().runJavaScriptPrompt(m_frame, message, defaultValue, returnValue))
         return returnValue;
 
     return String();
 }
 
-String DOMWindow::btoa(const String& stringToEncode, ExceptionCode& ec)
-{
-    if (stringToEncode.isNull())
-        return String();
-
-    if (!stringToEncode.containsOnlyLatin1()) {
-        ec = InvalidCharacterError;
-        return String();
-    }
-
-    return base64Encode(stringToEncode.latin1());
-}
-
-String DOMWindow::atob(const String& encodedString, ExceptionCode& ec)
-{
-    if (encodedString.isNull())
-        return String();
-
-    if (!encodedString.containsOnlyLatin1()) {
-        ec = InvalidCharacterError;
-        return String();
-    }
-
-    Vector<char> out;
-    if (!base64Decode(encodedString, out, Base64FailOnInvalidCharacter)) {
-        ec = InvalidCharacterError;
-        return String();
-    }
-
-    return String(out.data(), out.size());
-}
-
 bool DOMWindow::find(const String& string, bool caseSensitive, bool backwards, bool wrap, bool /*wholeWord*/, bool /*searchInFrames*/, bool /*showDialog*/) const
 {
     if (!isCurrentlyDisplayedInFrame())
         return false;
 
     // FIXME (13016): Support wholeWord, searchInFrames and showDialog
     return m_frame->editor()->findString(string, !backwards, caseSensitive, wrap, false);
 }
 
 bool DOMWindow::offscreenBuffering() const
@@ skipping 967 matching lines @@
 
     Frame* child = frame->tree()->scopedChild(index);
     if (child)
         return child->domWindow();
 
     return 0;
 }
 
 
 } // namespace WebCore