1 files changed, 32 insertions, 0 deletions
diff --git a/layout/style/DeclarationBlock.cpp b/layout/style/DeclarationBlock.cpp
new file mode 100644
index 0000000000..03d07049b9
--- /dev/null
+++ b/layout/style/DeclarationBlock.cpp
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/DeclarationBlock.h"
+
+#include "mozilla/css/Rule.h"
+
+#include "nsCSSProps.h"
+#include "nsIMemoryReporter.h"
+
+namespace mozilla {
+
+MOZ_DEFINE_MALLOC_SIZE_OF(ServoDeclarationBlockMallocSizeOf)
+MOZ_DEFINE_MALLOC_ENCLOSING_SIZE_OF(ServoDeclarationBlockEnclosingSizeOf)
+
+size_t DeclarationBlock::SizeofIncludingThis(MallocSizeOf aMallocSizeOf) {
+  size_t n = aMallocSizeOf(this);
+  n += Servo_DeclarationBlock_SizeOfIncludingThis(
+      ServoDeclarationBlockMallocSizeOf, ServoDeclarationBlockEnclosingSizeOf,
+      mRaw.get());
+  return n;
+}
+
+bool DeclarationBlock::OwnerIsReadOnly() const {
+  css::Rule* rule = GetOwningRule();
+  return rule && rule->IsReadOnly();
+}
+
+}  // namespace mozilla