Use loader-based binding of GetInstallDetailsPayload for install_static.

chrome/install_static/initialize_from_primary_module.h

Index: chrome/install_static/initialize_from_primary_module.h
diff --git a/chrome/install_static/initialize_from_primary_module.h b/chrome/install_static/initialize_from_primary_module.h
new file mode 100644
index 0000000000000000000000000000000000000000..e66e2057043a35f794cd773a9dd3762945a20bd4
--- /dev/null
+++ b/chrome/install_static/initialize_from_primary_module.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef CHROME_INSTALL_STATIC_INITIALIZE_FROM_PRIMARY_MODULE_H_
+#define CHROME_INSTALL_STATIC_INITIALIZE_FROM_PRIMARY_MODULE_H_
+
+namespace install_static {
+
+// Initializes an InstallDetails instance for this module with the payload from
+// the process's primary module (which exports an "GetInstallDetailsPayload"
+// function for this express purpose).
+void InitializeFromPrimaryModule();
+
+}  // namespace install_static
+
+#endif  // CHROME_INSTALL_STATIC_INITIALIZE_FROM_PRIMARY_MODULE_H_