[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/InsertTextCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/InsertTextCommand.h b/third_party/WebKit/Source/core/editing/commands/InsertTextCommand.h
index dccb65a08217ab76ab5f8a6ba172859ddcb9afdd..286dd668d30660478f62b7d5565f4e7ea51fca01 100644
--- a/third_party/WebKit/Source/core/editing/commands/InsertTextCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/InsertTextCommand.h
@@ -39,10 +39,11 @@ class InsertTextCommand final : public CompositeEditCommand {
 
   static InsertTextCommand* create(
       Document& document,
+      CommandSource source,
       const String& text,
       bool selectInsertedText = false,
       RebalanceType rebalanceType = RebalanceLeadingAndTrailingWhitespaces) {
-    return new InsertTextCommand(document, text, selectInsertedText,
+    return new InsertTextCommand(document, source, text, selectInsertedText,
                                  rebalanceType);
   }
 
@@ -50,6 +51,7 @@ class InsertTextCommand final : public CompositeEditCommand {
 
  private:
   InsertTextCommand(Document&,
+                    CommandSource,
                     const String& text,
                     bool selectInsertedText,
                     RebalanceType);