Fix under-invalidation of media buffered ranges

third_party/WebKit/Source/core/html/TimeRanges.h

 /*
  * Copyright (C) 2007, 2009 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 95 matching lines @@
 
     void add(double start, double end);
 
     bool contain(double time) const;
 
     double nearest(double newPlaybackPosition, double currentPlaybackPosition) const;
 
     DEFINE_INLINE_TRACE() { }
 
 private:
+    friend bool operator==(const TimeRanges&, const TimeRanges&);
+
     TimeRanges() { }
 
     TimeRanges(double start, double end);
 
     void invert();
 
     Vector<Range> m_ranges;
 };
 
+inline bool operator==(const TimeRanges::Range& a, const TimeRanges::Range& b) { return a.m_start == b.m_start && a.m_end == b.m_end; }
+inline bool operator!=(const TimeRanges::Range& a, const TimeRanges::Range& b) { return !(a == b); }
+inline bool operator==(const TimeRanges& a, const TimeRanges& b) { return a.m_ranges == b.m_ranges; }
+inline bool operator!=(const TimeRanges& a, const TimeRanges& b) { return !(a == b); }
+
 } // namespace blink
 
 #endif // TimeRanges_h