Adapt WebRange to only deal with EphemeralRanges.

third_party/WebKit/Source/web/WebRange.cpp

Index: third_party/WebKit/Source/web/WebRange.cpp
diff --git a/third_party/WebKit/Source/web/WebRange.cpp b/third_party/WebKit/Source/web/WebRange.cpp
index b659375b30dd94bffb3c15cca2be0f49bb16b8b9..a877e8a4e2f9d2182cf367ed57683574b9689acd 100644
--- a/third_party/WebKit/Source/web/WebRange.cpp
+++ b/third_party/WebKit/Source/web/WebRange.cpp
@@ -45,21 +45,21 @@ WebRange::WebRange(int start, int length)
     DCHECK(start != -1 && length != 0) << "These values are reserved to indicate that the range is null";
 }
 
-WebRange::WebRange(Range* range)
+WebRange::WebRange(const EphemeralRange& range)
 {
-    if (!range)
+    if (range.isNull())
         return;
 
-    m_start = range->startOffset();
-    m_end = range->endOffset();
+    m_start = range.startPosition().computeOffsetInContainerNode();
+    m_end =range.endPosition().computeOffsetInContainerNode();
 }
 
-Range* WebRange::createRange(LocalFrame* frame) const
+EphemeralRange WebRange::createEphemeralRange(LocalFrame* frame) const
 {
     Element* selectionRoot = frame->selection().rootEditableElement();
     ContainerNode* scope = selectionRoot ? selectionRoot : frame->document()->documentElement();
 
-    return blink::createRange(PlainTextRange(m_start, m_end).createRange(*scope));
+    return PlainTextRange(m_start, m_end).createRange(*scope);
 }
 
 } // namespace blink