[Editing] Store |CommandSource| in |CompositeEditCommand|

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

Index: third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp b/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp
index 96197db84e0f39de0322b6cb186301996c1788f1..6bcff8230019894d08cdc2cbca1bbbdd53356009 100644
--- a/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp
@@ -40,8 +40,9 @@ namespace blink {
 
 using namespace HTMLNames;
 
-RemoveFormatCommand::RemoveFormatCommand(Document& document)
-    : CompositeEditCommand(document) {}
+RemoveFormatCommand::RemoveFormatCommand(Document& document,
+                                         CommandSource source)
+    : CompositeEditCommand(document, source) {}
 
 static bool isElementForRemoveFormatCommand(const Element* element) {
   DEFINE_STATIC_LOCAL(
@@ -72,7 +73,7 @@ void RemoveFormatCommand::doApply(EditingState* editingState) {
                                      CSSValueTransparent);
 
   applyCommandToComposite(
-      ApplyStyleCommand::create(document(), defaultStyle,
+      ApplyStyleCommand::create(document(), commandSource(), defaultStyle,
                                 isElementForRemoveFormatCommand, inputType()),
       editingState);
 }