[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp b/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp
index ff2e6a09079c510e35f5016ef5a3538d3ab37668..da23057babd7359bc984feb31bdb3b55dd642727 100644
--- a/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp
@@ -63,9 +63,10 @@ static Element* highestVisuallyEquivalentDivBelowRoot(Element* startBlock) {
 
 InsertParagraphSeparatorCommand::InsertParagraphSeparatorCommand(
     Document& document,
+    CommandSource source,
     bool mustUseDefaultParagraphElement,
     bool pasteBlockquoteIntoUnquotedArea)
-    : CompositeEditCommand(document),
+    : CompositeEditCommand(document, source),
       m_mustUseDefaultParagraphElement(mustUseDefaultParagraphElement),
       m_pasteBlockquoteIntoUnquotedArea(pasteBlockquoteIntoUnquotedArea) {}
 
@@ -205,8 +206,9 @@ void InsertParagraphSeparatorCommand::doApply(EditingState* editingState) {
       || (!canonicalPos.isNull() &&
           isDisplayInsideTable(canonicalPos.anchorNode())) ||
       (!canonicalPos.isNull() && isHTMLHRElement(*canonicalPos.anchorNode()))) {
-    applyCommandToComposite(InsertLineBreakCommand::create(document()),
-                            editingState);
+    applyCommandToComposite(
+        InsertLineBreakCommand::create(document(), commandSource()),
+        editingState);
     return;
   }