VM: Support bootstrapping core libraries from Kernel binaries instead of source.

runtime/vm/kernel.h

Index: runtime/vm/kernel.h
diff --git a/runtime/vm/kernel.h b/runtime/vm/kernel.h
index 09e9f70968475867fd32dd94e34f8e7594d6d458..93b828baf7b1e910cbefcb7da5063916b6af7045 100644
--- a/runtime/vm/kernel.h
+++ b/runtime/vm/kernel.h
@@ -5,10 +5,12 @@
 #ifndef RUNTIME_VM_KERNEL_H_
 #define RUNTIME_VM_KERNEL_H_
 
+#if !defined(DART_PRECOMPILED_RUNTIME)
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/globals.h"
 
+
 #define KERNEL_NODES_DO(M)                                                     \
   M(Name)                                                                      \
   M(InferredValue)                                                             \
@@ -3243,4 +3245,5 @@ void WritePrecompiledKernel(ByteWriter* out, kernel::Program* program);
 
 }  // namespace dart
 
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
 #endif  // RUNTIME_VM_KERNEL_H_