Revert "Create an app snapshot of the Dart front end."

runtime/vm/kernel_isolate.cc

 // Copyright (c) 2016, 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.
 
 #include "vm/kernel_isolate.h"
 
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
@@ skipping 136 matching lines @@
     const Library& root_library =
         Library::Handle(Z, I->object_store()->root_library());
     if (root_library.IsNull()) {
       if (FLAG_trace_kernel) {
         OS::Print("kernel-service: Embedder did not install a script.");
       }
       // Kernel isolate is not supported by embedder.
       return false;
     }
     ASSERT(!root_library.IsNull());
-    const String& entry_name = String::Handle(Z, String::New("start"));
+    const String& entry_name = String::Handle(Z, String::New("main"));
     ASSERT(!entry_name.IsNull());
     const Function& entry = Function::Handle(
         Z, root_library.LookupFunctionAllowPrivate(entry_name));
     if (entry.IsNull()) {
       // Kernel isolate is not supported by embedder.
       if (FLAG_trace_kernel) {
         OS::Print("kernel-service: Embedder did not provide a main function.");
       }
       return false;
     }
@@ skipping 89 matching lines @@
   MonitorLocker ml(monitor_);
   while (initializing_ && (kernel_port_ == ILLEGAL_PORT)) {
     ml.Wait();
   }
   return kernel_port_;
 }
 
 #endif  // DART_PRECOMPILED_RUNTIME
 
 }  // namespace dart