Extend WebSurroundingText to accept a WebRange.

Source/web/WebSurroundingText.cpp

Index: Source/web/WebSurroundingText.cpp
diff --git a/Source/web/WebSurroundingText.cpp b/Source/web/WebSurroundingText.cpp
index 58383dcdf89ddcb3c6455ad813fe0d1384c26c1e..ce7c681cfc0ff1128e71a77ca15127311858de8b 100644
--- a/Source/web/WebSurroundingText.cpp
+++ b/Source/web/WebSurroundingText.cpp
@@ -48,6 +48,12 @@ void WebSurroundingText::initialize(const WebNode& webNode, const WebPoint& node
     m_private.reset(new SurroundingText(VisiblePosition(node->renderer()->positionForPoint(static_cast<IntPoint>(nodePoint))).deepEquivalent().parentAnchoredEquivalent(), maxLength));
 }
 
+void WebSurroundingText::initialize(const WebRange& webRange, size_t maxLength)
+{
+    if (RefPtrWillBeRawPtr<Range> range = static_cast<PassRefPtrWillBeRawPtr<Range> >(webRange))
+        m_private.reset(new SurroundingText(*range, maxLength));
+}
+
 WebString WebSurroundingText::textContent() const
 {
     return m_private->content();
@@ -59,6 +65,16 @@ size_t WebSurroundingText::hitOffsetInTextContent() const
     return m_private->startOffsetInContent();
 }
 
+size_t WebSurroundingText::startOffsetInTextContent() const
+{
+    return m_private->startOffsetInContent();
+}
+
+size_t WebSurroundingText::endOffsetInTextContent() const
+{
+    return m_private->endOffsetInContent();
+}
+
 WebRange WebSurroundingText::rangeFromContentOffsets(size_t startOffsetInContent, size_t endOffsetInContent)
 {
     return m_private->rangeFromContentOffsets(startOffsetInContent, endOffsetInContent);