Shape unicode-range: font faces in only one iteration

third_party/WebKit/Source/platform/fonts/UnicodeRangeSet.cpp

 /*
  * Copyright (C) 2007, 2008, 2011 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 44 matching lines @@
 }
 
 bool UnicodeRangeSet::contains(UChar32 c) const
 {
     if (isEntireRange())
         return true;
     Vector<UnicodeRange>::const_iterator it = std::lower_bound(m_ranges.begin(), m_ranges.end(), c);
     return it != m_ranges.end() && it->contains(c);
 }
 
-bool UnicodeRangeSet::contains(const FontDataRange& range) const
-{
-    for (auto it = m_ranges.begin(); it != m_ranges.end(); ++it) {
-        if (*it == range)
-            return true;
-    }
-    return false;
-}
-
 bool UnicodeRangeSet::intersectsWith(const String& text) const
 {
     if (text.isEmpty())
         return false;
     if (isEntireRange())
         return true;
     if (text.is8Bit() && m_ranges[0].from() >= 0x100)
         return false;
 
     unsigned index = 0;
     while (index < text.length()) {
         UChar32 c = text.characterStartingAt(index);
         index += U16_LENGTH(c);
         if (contains(c))
             return true;
     }
     return false;
 }
 
+bool UnicodeRangeSet::operator==(const UnicodeRangeSet& other) const
+{
+    if (m_ranges.size() == 0 && other.size() == 0)
+        return true;
+    if (m_ranges.size() != other.size()) {
+        return false;
+    }
+    bool equal = true;
+    for (size_t i = 0; i < m_ranges.size(); ++i) {
+        equal = equal && m_ranges[i] == other.m_ranges[i];
+    }
+    return equal;
 }
+}