Remove code related to title directionality, we never used it

Source/core/platform/text/StringWithDirection.h

Index: Source/core/platform/text/StringWithDirection.h
diff --git a/Source/core/platform/text/StringWithDirection.h b/Source/core/platform/text/StringWithDirection.h
deleted file mode 100644
index d8f19460f0643e969d97625e5b3521693f4aadd2..0000000000000000000000000000000000000000
--- a/Source/core/platform/text/StringWithDirection.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2011 Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY 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.
- */
-
-#ifndef StringWithDirection_h
-#define StringWithDirection_h
-
-#include "core/platform/text/TextDirection.h"
-#include "wtf/text/WTFString.h"
-
-namespace WebCore {
-
-// In some circumstances we want to store a String along with the TextDirection
-// of the String as learned from the context of the String. For example,
-// consider storing the title derived from <title dir='rtl'>some title</title>
-// in the history.
-//
-// Note that is explicitly *not* the direction of the string as learned
-// from the characters of the string; it's extra metadata we have external
-// to the string.
-class StringWithDirection {
-public:
-    StringWithDirection()
-        : m_direction(LTR)
-    {
-    }
-
-    StringWithDirection(const String& string, TextDirection dir)
-        : m_string(string)
-        , m_direction(dir)
-    {
-    }
-
-    const String& string() const { return m_string; }
-    TextDirection direction() const { return m_direction; }
-
-    bool isEmpty() const { return m_string.isEmpty(); }
-    bool isNull() const { return m_string.isNull(); }
-
-    bool operator==(const StringWithDirection& other) const
-    {
-        return other.m_string == m_string && other.m_direction == m_direction;
-    }
-    bool operator!=(const StringWithDirection& other) const { return !((*this) == other); }
-
-private:
-    String m_string;
-    TextDirection m_direction;
-};
-
-}
-
-#endif // StringWithDirection_h