VM: Precompile method extractors for implicit and explicit closurization.

runtime/vm/precompiler.cc

Index: runtime/vm/precompiler.cc
diff --git a/runtime/vm/precompiler.cc b/runtime/vm/precompiler.cc
index f061da02c6905080a973bca7316e9dec985b45da..1d42c5d104395e6a8732e6d7eb6f0477324abd2b 100644
--- a/runtime/vm/precompiler.cc
+++ b/runtime/vm/precompiler.cc
@@ -591,6 +591,10 @@ void Precompiler::CheckForNewDynamicFunctions() {
 
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#foo.
+            function2 = function.GetMethodExtractor(selector3);
+            AddFunction(function2);
           }
         } else if (Field::IsSetterName(selector)) {
           selector2 = Symbols::LookupFromConcat(Symbols::ClosurizePrefix(),
@@ -602,6 +606,10 @@ void Precompiler::CheckForNewDynamicFunctions() {
 
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#set:foo.
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
         } else if (function.kind() == RawFunction::kRegularFunction) {
           selector2 = Field::LookupGetterSymbol(selector);
@@ -610,6 +618,10 @@ void Precompiler::CheckForNewDynamicFunctions() {
             // Function is foo and somewhere get:foo is called.
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor.
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
           selector2 = Symbols::LookupFromConcat(Symbols::ClosurizePrefix(),
                                                 selector);
@@ -618,6 +630,10 @@ void Precompiler::CheckForNewDynamicFunctions() {
             // Function is foo and somewhere get:#foo is called.
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#foo
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
         }
       }