[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.h b/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.h
index 3fa93335ad272f07785ecf8ac79de04c2dc08fd8..fda46edd901f8c7defe48646ec868218242564e5 100644
--- a/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.h
@@ -36,16 +36,19 @@ class InsertParagraphSeparatorCommand final : public CompositeEditCommand {
  public:
   static InsertParagraphSeparatorCommand* create(
       Document& document,
+      CommandSource source,
       bool useDefaultParagraphElement = false,
       bool pasteBlockquoteIntoUnquotedArea = false) {
-    return new InsertParagraphSeparatorCommand(
-        document, useDefaultParagraphElement, pasteBlockquoteIntoUnquotedArea);
+    return new InsertParagraphSeparatorCommand(document, source,
+                                               useDefaultParagraphElement,
+                                               pasteBlockquoteIntoUnquotedArea);
   }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   InsertParagraphSeparatorCommand(Document&,
+                                  CommandSource,
                                   bool useDefaultParagraphElement,
                                   bool pasteBlockquoteIntoUnquotedArea);