Use loader-based binding of GetInstallDetailsPayload for install_static.

chrome/install_static/BUILD.gn

Index: chrome/install_static/BUILD.gn
diff --git a/chrome/install_static/BUILD.gn b/chrome/install_static/BUILD.gn
index 3fff4aa255ae5b3b508be0ebaf8e0bb39dd0315e..74c2857a05f0cd46b53b2e170abaf00f6b2adb33 100644
--- a/chrome/install_static/BUILD.gn
+++ b/chrome/install_static/BUILD.gn
@@ -54,6 +54,27 @@ static_library("install_static_util") {
   ]
 }
 
+# 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 = [