[InputEvent] Support |deleteByDrag|, |insertFromDrop| and fire in sequential order

third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h

Index: third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h b/third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h
index d2f82d5a20adc1f2b2e3b034ddaba949c9efd636..a4f37602ab7957ceba81b1f69c29f6e556ec48a1 100644
--- a/third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.h
@@ -35,9 +35,9 @@ class HTMLTableRowElement;
 
 class DeleteSelectionCommand final : public CompositeEditCommand {
 public:
-    static DeleteSelectionCommand* create(Document& document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true, InputEvent::InputType inputType = InputEvent::InputType::None)
+    static DeleteSelectionCommand* create(Document& document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true, InputEvent::InputType inputType = InputEvent::InputType::None, const Position& referenceMovePosition = Position())
     {
-        return new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup, inputType);
+        return new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup, inputType, referenceMovePosition);
     }
     static DeleteSelectionCommand* create(const VisibleSelection& selection, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true, InputEvent::InputType inputType = InputEvent::InputType::None)
     {
@@ -47,7 +47,7 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool santizeMarkup, InputEvent::InputType);
+    DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool santizeMarkup, InputEvent::InputType, const Position& referenceMovePosition);
     DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool sanitizeMarkup, InputEvent::InputType);
 
     void doApply(EditingState*) override;
@@ -90,6 +90,7 @@ private:
     Position m_endingPosition;
     Position m_leadingWhitespace;
     Position m_trailingWhitespace;
+    Position m_referenceMovePosition;
     Member<Node> m_startBlock;
     Member<Node> m_endBlock;
     Member<EditingStyle> m_typingStyle;