Selection API: collapse() should recreate an internal Range.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index 3b798ec93b6e4f0519db810ffddef6c3e5ec2560..213876fb6141745371e6f8045905d012e2f5538b 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -2607,6 +2607,34 @@ void Internals::forceReload(bool bypassCache) {
                   ClientRedirectPolicy::NotClientRedirect);
 }
 
+Node* Internals::visibleSelectionAnchorNode() {
+  if (!frame())
+    return nullptr;
+  Position position = frame()->selection().base();
+  return position.isNull() ? nullptr : position.computeContainerNode();
+}
+
+unsigned Internals::visibleSelectionAnchorOffset() {
+  if (!frame())
+    return 0;
+  Position position = frame()->selection().base();
+  return position.isNull() ? 0 : position.computeOffsetInContainerNode();
+}
+
+Node* Internals::visibleSelectionFocusNode() {
+  if (!frame())
+    return nullptr;
+  Position position = frame()->selection().extent();
+  return position.isNull() ? nullptr : position.computeContainerNode();
+}
+
+unsigned Internals::visibleSelectionFocusOffset() {
+  if (!frame())
+    return 0;
+  Position position = frame()->selection().extent();
+  return position.isNull() ? 0 : position.computeOffsetInContainerNode();
+}
+
 ClientRect* Internals::selectionBounds(ExceptionState& exceptionState) {
   if (!frame()) {
     exceptionState.throwDOMException(