Wholesale move sky/engine/tonic to tonic

tonic/dart_error.cc

Index: tonic/dart_error.cc
diff --git a/tonic/dart_error.cc b/tonic/dart_error.cc
new file mode 100644
index 0000000000000000000000000000000000000000..971313c91e6598517fa791e428877abc4d03eaa7
--- /dev/null
+++ b/tonic/dart_error.cc
@@ -0,0 +1,34 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "tonic/dart_error.h"
+
+#include "base/logging.h"
+
+namespace blink {
+
+namespace DartError {
+
+const char kInvalidArgument[] = "Invalid argument.";
+
+}  // namespace DartError
+
+bool LogIfError(Dart_Handle handle) {
+  if (Dart_IsError(handle)) {
+    LOG(ERROR) << Dart_GetError(handle);
+
+    // Only unhandled exceptions have stacktraces.
+    if (!Dart_ErrorHasException(handle))
+      return true;
+
+    Dart_Handle stacktrace = Dart_ErrorGetStacktrace(handle);
+    const char* stacktrace_cstr = "";
+    Dart_StringToCString(Dart_ToString(stacktrace), &stacktrace_cstr);
+    LOG(ERROR) << stacktrace_cstr;
+    return true;
+  }
+  return false;
+}
+
+}  // namespace blink