Use loader-based binding of GetInstallDetailsPayload for install_static.

chrome/install_static/BUILD.gn

 # Copyright 2016 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.
 
 import("//build/config/chrome_build.gni")
 import("//testing/test.gni")
 
 assert(is_win)
 
 # This file only contains utility functions which must only depend on kernel32.
@@ skipping 36 matching lines @@
   }
 
   libs = [ "kernel32.lib" ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }
 
+# A source set for use by the module in a process that creates the process-wide
+# InstallDetails instance.

[scottmg, 2017/01/16 21:01:15]

It would help me (a future naïve reader) to say that the canonical example of
this module is chrome_elf, and below, chrome. (Assuming that's correct).

[grt (UTC plus 2), 2017/01/16 21:06:47]

Great suggestion. Comments added. Future me will appreciate them, too.

+source_set("primary_module") {
+  sources = [
+    "get_install_details_payload.cc",
+  ]
+}
+
+# A source set for use by modules in a process that fetch the process-wide
+# InstallDetails instance from the primary module by way of
+# GetInstallDetailsPayload.
+source_set("secondary_module") {
+  sources = [
+    "initialize_from_primary_module.cc",
+    "initialize_from_primary_module.h",
+  ]
+  deps = [
+    ":install_static_util",
+  ]
+}
+
 test("install_static_unittests") {
   output_name = "install_static_unittests"
   sources = [
     "install_details_unittest.cc",
     "install_modes_unittest.cc",
     "install_util_unittest.cc",
     "product_install_details_unittest.cc",
     "user_data_dir_win_unittest.cc",
   ]
   include_dirs = [ "$target_gen_dir" ]
   deps = [
     "//base",
     "//base/test:run_all_unittests",
     "//base/test:test_support",
     "//chrome/install_static:install_static_util",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }