Add support for converted closures with explicit contexts to VM

runtime/vm/kernel_binary_flowgraph.h

Index: runtime/vm/kernel_binary_flowgraph.h
diff --git a/runtime/vm/kernel_binary_flowgraph.h b/runtime/vm/kernel_binary_flowgraph.h
index 21afadc253d6f02f9233b9d5b370e80b9e58961f..cf9b60e203cff1b677f125b08fa8ffe5ea9e8fe3 100644
--- a/runtime/vm/kernel_binary_flowgraph.h
+++ b/runtime/vm/kernel_binary_flowgraph.h
@@ -117,6 +117,7 @@ class StreamingScopeBuilder {
   void VisitInterfaceType(bool simple);
   void VisitFunctionType(bool simple);
   void VisitTypeParameterType();
+  void VisitVectorType();
   void HandleLocalFunction(intptr_t parent_kernel_offset);
 
   void EnterScope(intptr_t kernel_offset);
@@ -372,6 +373,7 @@ class StreamingFlowGraphBuilder {
   Fragment BuildFieldInitializer(NameIndex canonical_name);
   Fragment BuildInitializers(intptr_t constructor_class_parent_offset);
   FlowGraph* BuildGraphOfImplicitClosureFunction(const Function& function);
+  FlowGraph* BuildGraphOfConvertedClosureFunction(const Function& function);
   FlowGraph* BuildGraphOfFunction(
       intptr_t constructor_class_parent_offset = -1);
 
@@ -442,6 +444,7 @@ class StreamingFlowGraphBuilder {
   BreakableBlock* breakable_block();
   GrowableArray<YieldContinuation>& yield_continuations();
   Value* stack();
+  void Push(Definition* definition);
   Value* Pop();
 
   Tag PeekArgumentsFirstPositionalTag();
@@ -497,8 +500,13 @@ class StreamingFlowGraphBuilder {
   Fragment AllocateObject(TokenPosition position,
                           const dart::Class& klass,
                           intptr_t argument_count);
+  Fragment AllocateObject(const dart::Class& klass,
+                          const Function& closure_function);
+  Fragment AllocateContext(intptr_t size);
+  Fragment LoadField(intptr_t offset);
   Fragment StoreLocal(TokenPosition position, LocalVariable* variable);
   Fragment StoreStaticField(TokenPosition position, const dart::Field& field);
+  Fragment StoreInstanceField(TokenPosition position, intptr_t offset);
   Fragment StringInterpolate(TokenPosition position);
   Fragment StringInterpolateSingle(TokenPosition position);
   Fragment ThrowTypeError();
@@ -586,6 +594,11 @@ class StreamingFlowGraphBuilder {
   Fragment BuildDoubleLiteral(TokenPosition* position);
   Fragment BuildBoolLiteral(bool value, TokenPosition* position);
   Fragment BuildNullLiteral(TokenPosition* position);
+  Fragment BuildVectorCreation(TokenPosition* position);
+  Fragment BuildVectorGet(TokenPosition* position);
+  Fragment BuildVectorSet(TokenPosition* position);
+  Fragment BuildVectorCopy(TokenPosition* position);
+  Fragment BuildClosureCreation(TokenPosition* position);
 
   Fragment BuildInvalidStatement();
   Fragment BuildExpressionStatement();