Reload native extensions when starting from a snapshot.

runtime/include/dart_api.h

 /*
  * Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
  * for details. All rights reserved. Use of this source code is governed by a
  * BSD-style license that can be found in the LICENSE file.
  */
 
 #ifndef RUNTIME_INCLUDE_DART_API_H_
 #define RUNTIME_INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
@@ skipping 2922 matching lines @@
  * \param library The library into which to import another library.
  * \param import The library to import.
  * \param prefix The prefix under which to import.
  *
  * \return A valid handle if no error occurs during the operation.
  */
 DART_EXPORT Dart_Handle Dart_LibraryImportLibrary(Dart_Handle library,
                                                   Dart_Handle import,
                                                   Dart_Handle prefix);
 
+
+/**
+ * Returns a list where each element 2n is an importing library and each element

[Cutch, 2016/11/07 22:24:16]

How about:

Returns a flattened list of pairs. The first element in each pair is the
importing library and the second element in each pair is the imported
library....

[rmacnak, 2016/11/08 00:17:32]

Done.

+ * 2n+1 is an imported library for each import in the isolate of a library whose
+ * URI's scheme is [scheme].
+ *
+ * Requires there to be a current isolate.
+ *
+ * \return A handle to a list of flattened pairs of importer-importee.
+ */
+DART_EXPORT Dart_Handle Dart_GetImportsOfScheme(Dart_Handle scheme);
+
+
 /**
  * Called by the embedder to provide the source for a "part of"
  * directive.  This function should be called in response to a
  * Dart_kSourceTag tag handler request (See Dart_LibraryTagHandler,
  * above).
  *
  * \param library The library where the "part of" directive occurs.
  *
  * \param url The original url requested for the part.
  *
@@ skipping 243 matching lines @@
 /**
  *  Returns whether the VM was initialized with a precompiled snapshot. Only
  *  valid after Dart_Initialize.
  *  DEPRECATED. This is currently used to disable Platform.executable and
  *  Platform.resolvedExecutable under precompilation to prevent process
  *  spawning tests from becoming fork-bombs.
  */
 DART_EXPORT bool Dart_IsRunningPrecompiledCode();
 
 #endif  /* INCLUDE_DART_API_H_ */  /* NOLINT */