Initial steps into streaming the kernel flowgraph

runtime/vm/kernel.h

Index: runtime/vm/kernel.h
diff --git a/runtime/vm/kernel.h b/runtime/vm/kernel.h
index 54f1b9ab9b67b2eb59d4fe8780fc46b3ce3a6a43..0b19f13b3922d7b47e24675b4c2d2be0bc34aef5 100644
--- a/runtime/vm/kernel.h
+++ b/runtime/vm/kernel.h
@@ -512,8 +512,11 @@ class Library : public LinkedNode {
     return true;
   }
 
+  const uint8_t* kernel_data() { return kernel_data_; }
+  intptr_t kernel_data_size() { return kernel_data_size_; }
+
  private:
-  Library() : name_(NULL) {}
+  Library() : name_(NULL), kernel_data_(NULL), kernel_data_size_(-1) {}
 
   template <typename T>
   friend class List;
@@ -524,6 +527,8 @@ class Library : public LinkedNode {
   List<Class> classes_;
   List<Field> fields_;
   List<Procedure> procedures_;
+  const uint8_t* kernel_data_;
+  intptr_t kernel_data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(Library);
 };