Use loader-based binding of GetInstallDetailsPayload for install_static.

chrome/install_static/get_install_details_payload.cc

+// Copyright 2017 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/install_static/install_details.h"
+
+// Returns the payload of the module's details. This should be linked into the
+// primary module (i.e., chrome_elf) via the "primary_module" source set and
+// exported for use by other modules in the process; see
+// install_static::InitializeFromPrimaryModule.
+extern "C" const install_static::InstallDetails::Payload*
+GetInstallDetailsPayload() {
+  return install_static::InstallDetails::Get().GetPayload();
+}