Support 'dart.library.X' env variables in the VM.

runtime/vm/parser.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.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 5778 matching lines @@
         continue;
       }
       // Check if this conditional line overrides the default import.
       const String& key = String::Handle(
           String::ConcatAll(Array::Handle(Array::MakeArray(pieces))));
       const String& value = (valueNode == NULL)
           ? Symbols::True()
           : String::Cast(valueNode->AsLiteralNode()->literal());
       // Call the embedder to supply us with the environment.
       const String& env_value =
-          String::Handle(Api::CallEnvironmentCallback(T, key));
+          String::Handle(Api::GetEnvironmentValue(T, key));
       if (!env_value.IsNull() && env_value.Equals(value)) {
         condition_triggered = true;
         url_literal = conditional_url_literal;
       }
     }
   }
   ASSERT(url_literal->IsLiteralNode());
   ASSERT(url_literal->AsLiteralNode()->literal().IsString());
   const String& url = String::Cast(url_literal->AsLiteralNode()->literal());
   if (url.Length() == 0) {
@@ skipping 8604 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME