Add StringView::toAtomicString().

third_party/WebKit/Source/wtf/text/StringView.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "wtf/text/StringView.h"
 
 namespace WTF {
 
 StringView::StringView(const UChar* chars, unsigned length)
     : m_length(length)
@@ skipping 17 matching lines @@
 {
     if (isNull())
         return String();
     if (isEmpty())
         return emptyString();
     if (is8Bit())
         return String(m_data.characters8, m_length);
     return StringImpl::create8BitIfPossible(m_data.characters16, m_length);
 }
 
+AtomicString StringView::toAtomicString() const
+{
+    if (isNull())
+        return nullAtom;
+    if (isEmpty())
+        return emptyAtom;
+    if (is8Bit())
+        return AtomicString(m_data.characters8, m_length);
+    return AtomicString(m_data.characters16, m_length);
+}
+
 bool equalStringView(const StringView& a, const StringView& b)
 {
     if (a.isNull() || b.isNull())
         return a.isNull() == b.isNull();
     if (a.length() != b.length())
         return false;
     if (a.is8Bit()) {
         if (b.is8Bit())
             return equal(a.characters8(), b.characters8(), a.length());
         return equal(a.characters8(), b.characters16(), a.length());
@@ skipping 13 matching lines @@
         if (b.is8Bit())
             return equalIgnoringASCIICase(a.characters8(), b.characters8(), a.length());
         return equalIgnoringASCIICase(a.characters8(), b.characters16(), a.length());
     }
     if (b.is8Bit())
         return equalIgnoringASCIICase(a.characters16(), b.characters8(), a.length());
     return equalIgnoringASCIICase(a.characters16(), b.characters16(), a.length());
 }
 
 } // namespace WTF