Adds an appguid argument for the recovery component action run.

The code now provides as a run action command line argument the Chrome
app guid registered with Omaha, as returned by the configurator, like this:

--appguid={8A69D345-D564-463c-AFF1-A69D9E530F96}

Bug: 687231
Change-Id: I22125e434ffbd4e98de9c3373dcb54ac7f98799a
Reviewed-on: https://chromium-review.googlesource.com/1100088Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Sorin Jianu <sorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567051}

components/update_client/action_runner_win.cc

@@ -56,6 +56,10 @@ base::CommandLine ActionRunner::MakeCommandLine(
   command_line.AppendSwitchASCII(
       "browser-version", component_.config()->GetBrowserVersion().GetString());
   command_line.AppendSwitchASCII("sessionid", component_.session_id());
+  const auto app_guid = component_.config()->GetAppGuid();
+  if (!app_guid.empty())
+    command_line.AppendSwitchASCII("appguid", app_guid);
+  VLOG(1) << "run action: " << command_line.GetCommandLineString();
   return command_line;
 }