Append parameters to webstore URL to indicate launch source.

chrome/browser/extensions/extension_omnibox_api.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/extensions/extension_omnibox_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
@@ skipping 273 matching lines @@
   UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppLaunchHistogram,
                             extension_misc::APP_LAUNCH_OMNIBOX_APP,
                             extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
 
   // Look at the preferences to find the right launch container.  If no
   // preference is set, launch as a regular tab.
   extension_misc::LaunchContainer launch_container =
       service->extension_prefs()->GetLaunchContainer(
           extension, ExtensionPrefs::LAUNCH_REGULAR);
 
-  Browser::OpenApplication(profile, extension, launch_container, disposition);
+  Browser::OpenApplication(profile, extension, launch_container, GURL(),
+                           disposition);
 }