Fix HTTP support in vm-service

runtime/vm/service_isolate.cc

 // Copyright (c) 2015, 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/service_isolate.h"
 
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
@@ skipping 637 matching lines @@
     ASSERT(*path != '\0');
     // Skip the '/'.
     path++;
     if (strcmp(name, path) == 0) {
       const uint8_t* str = Resources::Resource(i);
       intptr_t length = Resources::Length(i);
       return Dart_NewStringFromUTF8(str, length);
     }
     i++;
   }
+  FATAL1("vm-service: Could not find embedded source file: %s ", name);
   return Dart_Null();
 }
 
 
 Dart_Handle ServiceIsolate::LibraryTagHandler(Dart_LibraryTag tag,
                                               Dart_Handle library,
                                               Dart_Handle url) {
   if (tag == Dart_kCanonicalizeUrl) {
     // url is already canonicalized.
     return url;
   }
   if (tag != Dart_kSourceTag) {
     FATAL("ServiceIsolate::LibraryTagHandler encountered an unexpected tag.");
   }
   ASSERT(tag == Dart_kSourceTag);
   const char* url_string = NULL;
   Dart_Handle result = Dart_StringToCString(url, &url_string);
   if (Dart_IsError(result)) {
     return result;
   }
   Dart_Handle source = GetSource(url_string);
   if (Dart_IsError(source)) {
     return source;
   }
   return Dart_LoadSource(library, url, source, 0, 0);
 }
 
 }  // namespace dart