Revert of [InputEvent] Remove unused |inputType()| from |UndoStep| and |EditCommandComposition|

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 866d02dfe99734e203c106c3f9c8b144b4f294f3..ee81dce271d7319aab59e5652f6a218db8f031a0 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
@@ -82,20 +82,23 @@
 EditCommandComposition* EditCommandComposition::create(
     Document* document,
     const VisibleSelection& startingSelection,
-    const VisibleSelection& endingSelection) {
+    const VisibleSelection& endingSelection,
+    InputEvent::InputType inputType) {
   return new EditCommandComposition(document, startingSelection,
-                                    endingSelection);
+                                    endingSelection, inputType);
 }
 
 EditCommandComposition::EditCommandComposition(
     Document* document,
     const VisibleSelection& startingSelection,
-    const VisibleSelection& endingSelection)
+    const VisibleSelection& endingSelection,
+    InputEvent::InputType inputType)
     : m_document(document),
       m_startingSelection(startingSelection),
       m_endingSelection(endingSelection),
       m_startingRootEditableElement(startingSelection.rootEditableElement()),
-      m_endingRootEditableElement(endingSelection.rootEditableElement()) {}
+      m_endingRootEditableElement(endingSelection.rootEditableElement()),
+      m_inputType(inputType) {}
 
 bool EditCommandComposition::belongsTo(const LocalFrame& frame) const {
   DCHECK(m_document);
@@ -157,6 +160,10 @@
 bool EditCommandComposition::willReapply(EditCommandSource) {
   // TODO(chongz): Fire 'beforeinput' for 'historyRedo'.
   return true;
+}
+
+InputEvent::InputType EditCommandComposition::inputType() const {
+  return m_inputType;
 }
 
 void EditCommandComposition::append(SimpleEditCommand* command) {
@@ -255,10 +262,9 @@
   CompositeEditCommand* command = this;
   while (command && command->parent())
     command = command->parent();
-  if (!command->m_composition) {
+  if (!command->m_composition)
     command->m_composition = EditCommandComposition::create(
-        &document(), startingSelection(), endingSelection());
-  }
+        &document(), startingSelection(), endingSelection(), inputType());
   return command->m_composition.get();
 }