Allow setting breakpoints in literal function initializers of fields.

runtime/vm/parser.h

Index: runtime/vm/parser.h
diff --git a/runtime/vm/parser.h b/runtime/vm/parser.h
index aac41b0af445965a5d02737e3d28d222e655bc84..cc2ccf95afe09da5435ffe32c47ecca78d855941 100644
--- a/runtime/vm/parser.h
+++ b/runtime/vm/parser.h
@@ -274,6 +274,13 @@ class Parser : public ValueObject {
 
   static void ParseFunction(ParsedFunction* parsed_function);
 
+  // Return true if |field| has a function literal initializer.
+  // When true is returned, |start| and |end| will hold the token
+  // range of the function literal.
+  static bool FieldHasFunctionLiteralInitializer(const Field& field,
+                                                 TokenPosition* start,
+                                                 TokenPosition* end);
+
   // Parse and evaluate the metadata expressions at token_pos in the
   // class namespace of class cls (which can be the implicit toplevel
   // class if the metadata is at the top-level).
@@ -858,6 +865,9 @@ class Parser : public ValueObject {
   void CheckInstanceFieldAccess(TokenPosition field_pos,
                                 const String& field_name);
   bool ParsingStaticMember() const;
+  bool GetFunctionLiteralInitializerRange(const Field& field,
+                                          TokenPosition* start,
+                                          TokenPosition* end);
   const AbstractType* ReceiverType(const Class& cls);
   bool IsInstantiatorRequired() const;
   bool InGenericFunctionScope() const;