Add more of the server-side plumbing for extension APIs. Also

chrome/browser/extensions/extension_function.cc

Index: chrome/browser/extensions/extension_function.cc
diff --git a/chrome/browser/extensions/extension_function.cc b/chrome/browser/extensions/extension_function.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8eb562fdb18b61da4eb541d3da9bf5d2d2b58e78
--- /dev/null
+++ b/chrome/browser/extensions/extension_function.cc
@@ -0,0 +1,16 @@
+// Copyright (c) 2009 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 "chrome/browser/extensions/extension_function.h"
+
+#include "chrome/browser/extensions/extension_function_dispatcher.h"
+
+void ExtensionFunction::SendResponse(bool success) {
+  if (success) {
+    dispatcher_->SendResponse(this);
+  } else {
+    // TODO(aa): In case of failure, send the error message to an error
+    // callback.
+  }
+}