Mark semantics functions const (#9243)

lib/ui/semantics/semantics_node.cc

@@ -16,11 +16,11 @@ SemanticsNode::SemanticsNode(const SemanticsNode& other) = default;
 
 SemanticsNode::~SemanticsNode() = default;
 
-bool SemanticsNode::HasAction(SemanticsAction action) {
+bool SemanticsNode::HasAction(SemanticsAction action) const {
   return (actions & static_cast<int32_t>(action)) != 0;
 }
 
-bool SemanticsNode::HasFlag(SemanticsFlags flag) {
+bool SemanticsNode::HasFlag(SemanticsFlags flag) const {
   return (flags & static_cast<int32_t>(flag)) != 0;
 }
 

lib/ui/semantics/semantics_node.h

@@ -78,8 +78,8 @@ struct SemanticsNode {
 
   ~SemanticsNode();
 
-  bool HasAction(SemanticsAction action);
-  bool HasFlag(SemanticsFlags flag);
+  bool HasAction(SemanticsAction action) const;
+  bool HasFlag(SemanticsFlags flag) const;
 
   // Whether this node is for embedded platform views.
   bool IsPlatformViewNode() const;