Dart Timeline improvements

runtime/vm/dart_api_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 "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "lib/stacktrace.h"
@@ skipping 5022 matching lines @@
   if (result.IsNull()) {
     // Every 'dart:X' library introduces an environment variable
     // 'dart.library.X' that is set to 'true'.
     // We just need to make sure to hide private libraries (starting with
     // "_", and the mirrors library, if it is not supported.
 
     if (!FLAG_enable_mirrors && name.Equals(Symbols::DartLibraryMirrors())) {
       return Symbols::False().raw();
     }
 
+    if (name.Equals(Symbols::DartVMProduct())) {
+#ifdef PRODUCT
+      return Symbols::True().raw();
+#else
+      return Symbols::False().raw();
+#endif
+    }
+
     const String& prefix = Symbols::DartLibrary();
     if (name.StartsWith(prefix)) {
       const String& library_name =
           String::Handle(String::SubString(name, prefix.Length()));
 
       // Private libraries (starting with "_") are not exposed to the user.
       if (!library_name.IsNull() && library_name.CharAt(0) != '_') {
         const String& dart_library_name =
             String::Handle(String::Concat(Symbols::DartScheme(), library_name));
         const Library& library =
@@ skipping 1303 matching lines @@
 
 DART_EXPORT bool Dart_IsPrecompiledRuntime() {
 #if defined(DART_PRECOMPILED_RUNTIME)
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace dart