[kernel] Stream kernel_reader

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 f3cce6b2d2fabf7a09aa32bbd121a3baf1d7e57b..dfce124530183c6ab507e08488379d8da6515cee 100644
--- a/runtime/vm/kernel_binary_flowgraph.h
+++ b/runtime/vm/kernel_binary_flowgraph.h
@@ -87,6 +87,7 @@ class StreamingDartTypeTranslator {
   bool finalize_;
 
   friend class StreamingScopeBuilder;
+  friend class KernelReader;
 };
 
 
@@ -381,6 +382,7 @@ class StreamingFlowGraphBuilder {
   const dart::String& ReadNameAsMethodName();
   const dart::String& ReadNameAsGetterName();
   const dart::String& ReadNameAsSetterName();
+  const dart::String& ReadNameAsFieldName();
   void SkipStringReference();
   void SkipCanonicalNameReference();
   void SkipDartType();
@@ -613,6 +615,8 @@ class StreamingFlowGraphBuilder {
   friend class ProcedureHelper;
   friend class ClassHelper;
   friend class ConstructorHelper;
+  friend class SimpleExpressionConverter;
+  friend class KernelReader;
 };
 
 // Helper class that reads a kernel FunctionNode from binary.
@@ -1130,6 +1134,13 @@ class ConstructorHelper {
     ++next_read_;
   }
 
+  bool IsExternal() {
+    return (flags_ & Constructor::kFlagExternal) == Constructor::kFlagExternal;
+  }
+  bool IsConst() {
+    return (flags_ & Constructor::kFlagConst) == Constructor::kFlagConst;
+  }
+
   NameIndex canonical_name_;
   TokenPosition position_;
   TokenPosition end_position_;