Adapt WebRange to only deal with EphemeralRanges.

third_party/WebKit/public/web/WebRange.h

 /*
  * Copyright (C) 2009 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
@@ skipping 14 matching lines @@
  * 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 WebRange_h
 #define WebRange_h
 
 #include "public/platform/WebCommon.h"
+#if BLINK_IMPLEMENTATION
+#include "core/editing/EphemeralRange.h"
+#endif
 
 namespace blink {
 
+class LocalFrame;
 class Range;
 class WebString;
-class LocalFrame;
 
 class WebRange final {
 public:
     BLINK_EXPORT WebRange(int start, int length);
 
     int startOffset() const { return m_start; }
     int endOffset() const { return m_end; }
     int length() const { return m_end - m_start; }
 
     bool isNull() const { return m_start == -1 && m_end == -1; }
 
 #if BLINK_IMPLEMENTATION
-    WebRange(Range*);
+    WebRange(const EphemeralRange&);
 
-    Range* createRange(LocalFrame*) const;
+    EphemeralRange createEphemeralRange(LocalFrame*) const;
 #endif
 
 private:
     int m_start = -1;
     int m_end = -1;
 };
 
 } // namespace blink
 
 #endif