Use EphemeralRange to construct StaticRange

third_party/WebKit/Source/core/dom/StaticRange.h

Index: third_party/WebKit/Source/core/dom/StaticRange.h
diff --git a/third_party/WebKit/Source/core/dom/StaticRange.h b/third_party/WebKit/Source/core/dom/StaticRange.h
index 551efd9afb53f7dea7ef2ac9f880cdbc998ee6f6..fa007e37a04387fdcd4be052af2e3f9b3b15174a 100644
--- a/third_party/WebKit/Source/core/dom/StaticRange.h
+++ b/third_party/WebKit/Source/core/dom/StaticRange.h
@@ -10,6 +10,7 @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/Range.h"
+#include "core/editing/EphemeralRange.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
@@ -38,6 +39,14 @@ class CORE_EXPORT StaticRange final : public GarbageCollected<StaticRange>,
                            range->startOffset(), range->endContainer(),
                            range->endOffset());
   }
+  static StaticRange* create(const EphemeralRange& range) {
+    DCHECK(!range.isNull());
+    return new StaticRange(range.document(),
+                           range.startPosition().computeContainerNode(),
+                           range.startPosition().computeOffsetInContainerNode(),
+                           range.endPosition().computeContainerNode(),
+                           range.endPosition().computeOffsetInContainerNode());
+  }
 
   Node* startContainer() const { return m_startContainer.get(); }
   void setStartContainer(Node* startContainer) {