VM: [Kernel] Fix bootstraping when Kernel isolate is used.

runtime/vm/kernel_isolate.h

Index: runtime/vm/kernel_isolate.h
diff --git a/runtime/vm/kernel_isolate.h b/runtime/vm/kernel_isolate.h
index 8f54c347a1820b9c081cc68e299f21632ec56d8b..7c0afe56fb5434c911ca9d67b9ed55bdcdbf9bb0 100644
--- a/runtime/vm/kernel_isolate.h
+++ b/runtime/vm/kernel_isolate.h
@@ -29,6 +29,8 @@ class KernelIsolate : public AllStatic {
 
   static bool LoadScript(const String& url, const String& source);

[hausner, 2017/01/24 00:50:55]

LoadScript seems to have no implementation (even before your change). Should be
removed.

[Vyacheslav Egorov (Google), 2017/01/30 19:34:14]

Done.

 
+  static Dart_KernelCompilationResult CompileToKernel(const char* script_uri);
+
  protected:
   static Monitor* monitor_;
   static Dart_IsolateCreateCallback create_callback_;