Disallow setting invalid values for registered properties via CSSOM

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

Index: third_party/WebKit/Source/core/editing/commands/RemoveCSSPropertyCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/RemoveCSSPropertyCommand.cpp b/third_party/WebKit/Source/core/editing/commands/RemoveCSSPropertyCommand.cpp
index 99183c7e2291aa831cc075cd97fb97d4ca1c53eb..80ebee59c2b968cdf9cca042e36fd02d76be7d91 100644
--- a/third_party/WebKit/Source/core/editing/commands/RemoveCSSPropertyCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/RemoveCSSPropertyCommand.cpp
@@ -57,12 +57,12 @@ void RemoveCSSPropertyCommand::doApply(EditingState*) {
   // script. Setting to null string removes the property. We don't have internal
   // version of removeProperty.
   m_element->style()->setPropertyInternal(m_property, String(), String(), false,
-                                          IGNORE_EXCEPTION);
+                                          nullptr, IGNORE_EXCEPTION);
 }
 
 void RemoveCSSPropertyCommand::doUnapply() {
-  m_element->style()->setPropertyInternal(m_property, String(), m_oldValue,
-                                          m_important, IGNORE_EXCEPTION);
+  m_element->style()->setPropertyInternal(
+      m_property, String(), m_oldValue, m_important, nullptr, IGNORE_EXCEPTION);
 }
 
 DEFINE_TRACE(RemoveCSSPropertyCommand) {