Append parameters to webstore URL to indicate launch source.

chrome/browser/extensions/extension_management_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_management_api.h"
 
 #include <map>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 338 matching lines @@
                                                      extension_id);
     return false;
   }
 
   // Look at prefs to find the right launch container.
   // |default_pref_value| is set to LAUNCH_REGULAR so that if
   // the user has not set a preference, we open the app in a tab.
   extension_misc::LaunchContainer launch_container =
       service()->extension_prefs()->GetLaunchContainer(
           extension, ExtensionPrefs::LAUNCH_DEFAULT);
-  Browser::OpenApplication(profile(), extension, launch_container,
+  Browser::OpenApplication(profile(), extension, launch_container, GURL(),
                            NEW_FOREGROUND_TAB);
   UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppLaunchHistogram,
                             extension_misc::APP_LAUNCH_EXTENSION_API,
                             extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
 
   return true;
 }
 
 bool SetEnabledFunction::RunImpl() {
   std::string extension_id;
@@ skipping 110 matching lines @@
     bool enabled = service->GetExtensionById(extension->id(), false) != NULL;
     args.Append(CreateExtensionInfo(*extension, enabled));
   }
 
   std::string args_json;
   base::JSONWriter::Write(&args, false /* pretty_print */, &args_json);
 
   profile->GetExtensionEventRouter()->DispatchEventToRenderers(
       event_name, args_json, NULL, GURL());
 }