Allow DCI to pick up contents from Internet Plug-Ins on OS X.

components/component_updater/component_updater_paths.h

Index: components/component_updater/component_updater_paths.h
diff --git a/components/component_updater/component_updater_paths.h b/components/component_updater/component_updater_paths.h
index 94feb661f9595c9c851e26a39701be6fd2abc17f..1dc1177e2e55ea80c6b9aa3f44b694302d1ad763 100644
--- a/components/component_updater/component_updater_paths.h
+++ b/components/component_updater/component_updater_paths.h
@@ -17,6 +17,12 @@ enum {
                                             // implementations installed by the
                                             // Chrome installer or package
                                             // manager.
+  DIR_COMPONENT_PREINSTALLED_ALT,           // A second preinstalled directory,
+                                            // necessary because some components
+                                            // live in a distinct directory on
+                                            // OS X. On other platforms, this
+                                            // ultimately is equivalent to
+                                            // DIR_COMPONENT_PREINSTALLED.
   DIR_COMPONENT_USER,                       // Directory that contains user-wide
                                             // (component-updater-installer)
                                             // component implementations.
@@ -35,6 +41,7 @@ enum {
 // |components_user_root_key| is the path provider key defining where the
 // component updater should install new versions of components.
 void RegisterPathProvider(int components_system_root_key,
+                          int components_system_root_key_alt,

[Eugene But (OOO till 7-30), 2016/06/22 02:06:34]

Could you please update function comments and explain what
|components_system_root_key_alt| is.

                           int components_user_root_key);
 
 }  // namespace component_updater