[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.h b/third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.h
index 5c7c3c54f3a032313f0536f44c5da634dd3245f9..725eaa203db8544d62de845df80e1554f0d432b0 100644
--- a/third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.h
@@ -32,12 +32,13 @@ namespace blink {
 
 class BreakBlockquoteCommand final : public CompositeEditCommand {
  public:
-  static BreakBlockquoteCommand* create(Document& document) {
-    return new BreakBlockquoteCommand(document);
+  static BreakBlockquoteCommand* create(Document& document,
+                                        CommandSource source) {
+    return new BreakBlockquoteCommand(document, source);
   }
 
  private:
-  explicit BreakBlockquoteCommand(Document&);
+  BreakBlockquoteCommand(Document&, CommandSource);
   void doApply(EditingState*) override;
 };