Fix build.

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 4393 matching lines @@
 
 // --- Exceptions ----
 
 DART_EXPORT Dart_Handle Dart_ThrowException(Dart_Handle exception) {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   Isolate* isolate = thread->isolate();
   CHECK_ISOLATE(isolate);
   CHECK_CALLBACK_STATE(thread);
   if (Api::IsError(exception)) {
-    Dart_PropagateError(exception);
+    ::Dart_PropagateError(exception);
   }
 
   {
     const Instance& excp = Api::UnwrapInstanceHandle(zone, exception);
     if (excp.IsNull()) {
       RETURN_TYPE_ERROR(zone, exception, Instance);
     }
   }
   if (thread->top_exit_frame_info() == 0) {
     // There are no dart frames on the stack so it would be illegal to
@@ skipping 1596 matching lines @@
   return Api::Success();
 }
 #endif  // DART_PRECOMPILER
 
 
 DART_EXPORT bool Dart_IsRunningPrecompiledCode() {
   return Dart::IsRunningPrecompiledCode();
 }
 
 }  // namespace dart