Fix HTTP support in vm-service

runtime/bin/vmservice_impl.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.
 
 #include "bin/vmservice_impl.h"
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 248 matching lines @@
   server_port_ = port;
 }
 
 
 Dart_Handle VmService::GetSource(const char* name) {
   const intptr_t kBufferSize = 512;
   char buffer[kBufferSize];
   snprintf(&buffer[0], kBufferSize-1, "%s/%s", kLibrarySourceNamePrefix, name);
   const char* vmservice_source = NULL;
   int r = Resources::ResourceLookup(buffer, &vmservice_source);
+  if (r == Resources::kNoSuchInstance) {
+    FATAL1("vm-service: Could not find embedded source file: %s ", buffer);
+  }
   ASSERT(r != Resources::kNoSuchInstance);
   return Dart_NewStringFromCString(vmservice_source);
 }
 
 
 Dart_Handle VmService::LoadScript(const char* name) {
   Dart_Handle url = Dart_NewStringFromCString("dart:vmservice_io");
   Dart_Handle source = GetSource(name);
   return Dart_LoadScript(url, source, 0, 0);
 }
@@ skipping 94 matching lines @@
   Dart_Handle source = GetSource(url_string);
   if (Dart_IsError(source)) {
     return source;
   }
   return Dart_LoadSource(library, url, source, 0, 0);
 }
 
 
 }  // namespace bin
 }  // namespace dart