[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.h b/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.h
index 03e8899a120ffbc0450e75d91d61304a96d66cf0..4b3d6011d22d94685132212c253d443b88fc3fef 100644
--- a/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.h
@@ -32,12 +32,12 @@ namespace blink {
 
 class RemoveFormatCommand final : public CompositeEditCommand {
  public:
-  static RemoveFormatCommand* create(Document& document) {
-    return new RemoveFormatCommand(document);
+  static RemoveFormatCommand* create(Document& document, CommandSource source) {
+    return new RemoveFormatCommand(document, source);
   }
 
  private:
-  explicit RemoveFormatCommand(Document&);
+  RemoveFormatCommand(Document&, CommandSource);
 
   void doApply(EditingState*) override;
   InputEvent::InputType inputType() const;