Implement stub of Blink API to check for enabled experiments

third_party/WebKit/Source/core/experiments/Experiments.cpp

+// 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 "config.h"
+#include "core/experiments/Experiments.h"
+
+#include "core/dom/ExceptionCode.h"
+
+namespace blink {
+
+bool Experiments::isApiEnabled(ExecutionContext* executionContext, const String& apiName)
+{
+    return false;
+}
+
+DOMException* Experiments::createApiDisabledException(const String& apiName)
+{
+    // TODO(chasej): Update message with URL to experiments site, when live
+    return DOMException::create(NotSupportedError, "The '" + apiName + "' API is currently enabled in limited experiments. Please see [Chrome experiments website URL] for information on enabling this experiment on your site.");
+}
+
+} // namespace blink