Add dart:web to VM.

runtime/bin/gen_snapshot.cc

 // 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ skipping 170 matching lines @@
     if (DartUtils::IsDartCryptoLibURL(url_string)) {
       id = Builtin::kCryptoLibrary;
     } else if (DartUtils::IsDartIOLibURL(url_string)) {
       id = Builtin::kIOLibrary;
     } else if (DartUtils::IsDartJsonLibURL(url_string)) {
       id = Builtin::kJsonLibrary;
     } else if (DartUtils::IsDartUriLibURL(url_string)) {
       id = Builtin::kUriLibrary;
     } else if (DartUtils::IsDartUtfLibURL(url_string)) {
       id = Builtin::kUtfLibrary;
+    } else if (DartUtils::IsDartWebLibURL(url_string)) {
+      id = Builtin::kWebLibrary;
     } else {
       return Dart_Error("Do not know how to load '%s'", url_string);
     }
     return Builtin::LoadLibrary(id);
   }
   return Dart_Error("unexpected tag encountered %d", tag);
 }
 
 
 static Dart_Handle LoadGenericSnapshotCreationScript(
@@ skipping 102 matching lines @@
     library = LoadGenericSnapshotCreationScript(Builtin::kCryptoLibrary);
     VerifyLoaded(library);
     library = LoadGenericSnapshotCreationScript(Builtin::kIOLibrary);
     VerifyLoaded(library);
     library = LoadGenericSnapshotCreationScript(Builtin::kJsonLibrary);
     VerifyLoaded(library);
     library = LoadGenericSnapshotCreationScript(Builtin::kUriLibrary);
     VerifyLoaded(library);
     library = LoadGenericSnapshotCreationScript(Builtin::kUtfLibrary);
     VerifyLoaded(library);
+    library = LoadGenericSnapshotCreationScript(Builtin::kWebLibrary);
+    VerifyLoaded(library);
   }
 
   uint8_t* buffer = NULL;
   intptr_t size = 0;
   // First create the snapshot.
   result = Dart_CreateSnapshot(&buffer, &size);
   if (Dart_IsError(result)) {
     const char* err_msg = Dart_GetError(result);
     fprintf(stderr, "Error while creating snapshot: %s\n", err_msg);
     Dart_ExitScope();
     Dart_ShutdownIsolate();
     exit(255);
   }
   // Now write the snapshot out to specified file and exit.
   WriteSnapshotFile(buffer, size);
   Dart_ExitScope();
 
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   return 0;
 }