Move EditCommand::starting/endingSelection() to CompositeEditCommand (1/2)

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp

Index: third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
index c20f8bdf795a1cb8d6501b6b67d7cdd5b81d21d5..285830eacb088698b646a4302f72c5de898f230f 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
@@ -80,7 +80,10 @@ namespace blink {
 using namespace HTMLNames;
 
 CompositeEditCommand::CompositeEditCommand(Document& document)
-    : EditCommand(document) {}
+    : EditCommand(document) {
+  setStartingSelection(document.frame()->selection().selection());
+  setEndingVisibleSelection(m_startingSelection);
+}
 
 CompositeEditCommand::~CompositeEditCommand() {
   DCHECK(isTopLevelCommand() || !m_undoStep);
@@ -1932,6 +1935,8 @@ Node* CompositeEditCommand::splitTreeToNode(Node* start,
 
 DEFINE_TRACE(CompositeEditCommand) {
   visitor->trace(m_commands);
+  visitor->trace(m_startingSelection);
+  visitor->trace(m_endingSelection);
   visitor->trace(m_undoStep);
   EditCommand::trace(visitor);
 }