Adapt WebRange to only deal with EphemeralRanges.

third_party/WebKit/public/web/WebRange.h

Index: third_party/WebKit/public/web/WebRange.h
diff --git a/third_party/WebKit/public/web/WebRange.h b/third_party/WebKit/public/web/WebRange.h
index 36dcbea6b118f7c46b3a0a93937796e1cb8f06f2..a80d5456478f0b9f2401fcaa5f031f1251f4a812 100644
--- a/third_party/WebKit/public/web/WebRange.h
+++ b/third_party/WebKit/public/web/WebRange.h
@@ -32,12 +32,15 @@
 #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:
@@ -50,9 +53,9 @@ public:
     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: