Changes to make isolate reload functionality work with the --dfe option.

runtime/bin/gen_snapshot.cc

 // Copyright (c) 2013, 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <cstdarg>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
+#include "bin/dfe.h"
 #include "bin/eventhandler.h"
 #include "bin/file.h"
 #include "bin/loader.h"
 #include "bin/log.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 #include "bin/vmservice_impl.h"
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
 
 #include "platform/hashmap.h"
 #include "platform/globals.h"
 #include "platform/growable_array.h"
 
 namespace dart {
 namespace bin {
 
+DFE dfe;
+
 // Exit code indicating an API error.
 static const int kApiErrorExitCode = 253;
 // Exit code indicating a compilation error.
 static const int kCompilationErrorExitCode = 254;
 // Exit code indicating an unhandled error that is not a compilation error.
 static const int kErrorExitCode = 255;
 
 #define CHECK_RESULT(result)                                                   \
   if (Dart_IsError(result)) {                                                  \
     intptr_t exit_code = 0;                                                    \
@@ skipping 1519 matching lines @@
     Dart_ExitScope();
     Dart_ExitIsolate();
 
     // Now we create an isolate into which we load all the code that needs to
     // be in the snapshot.
     isolate_data = new IsolateData(app_script_name, commandline_package_root,
                                    commandline_packages_file, NULL);
     const uint8_t* kernel = NULL;
     intptr_t kernel_length = 0;
     const bool is_kernel_file =
-        TryReadKernel(app_script_name, &kernel, &kernel_length);
+        dfe.TryReadKernelFile(app_script_name, &kernel, &kernel_length);
 
     if ((dependencies_filename != NULL) || print_dependencies) {
       isolate_data->set_dependencies(new MallocGrowableArray<char*>());
     }
 
     void* kernel_program = NULL;
     if (is_kernel_file) {
       kernel_program = Dart_ReadKernelBinary(kernel, kernel_length);
       free(const_cast<uint8_t*>(kernel));
     }
@@ skipping 94 matching lines @@
   delete mapped_isolate_snapshot_data;
   return 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }