Introduce LaunchParams struct for opening chrome apps.

chrome/browser/ui/startup/startup_browser_creator_impl.cc

Index: chrome/browser/ui/startup/startup_browser_creator_impl.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator_impl.cc b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
index c0fd4d272428803515090a84d750f100f73561f2..9996b6e46d521debe75cbef8e513533663ab8ad9 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_impl.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
@@ -392,8 +392,9 @@ bool StartupBrowserCreatorImpl::OpenApplicationTab(Profile* profile) {
 
   RecordCmdLineAppHistogram();
 
-  WebContents* app_tab = application_launch::OpenApplicationTab(
-      profile, extension, GURL(), NEW_FOREGROUND_TAB);
+  WebContents* app_tab = application_launch::OpenApplication(
+      application_launch::LaunchParams(profile, extension,
+          extension_misc::LAUNCH_TAB, NEW_FOREGROUND_TAB));
   return (app_tab != NULL);
 }
 
@@ -427,9 +428,11 @@ bool StartupBrowserCreatorImpl::OpenApplicationWindow(
 
     RecordCmdLineAppHistogram();
 
+    application_launch::LaunchParams params(profile, extension,
+                                            launch_container, NEW_WINDOW);
+    params.command_line = &command_line_;
     WebContents* tab_in_app_window = application_launch::OpenApplication(
-        profile, extension, launch_container, GURL(), NEW_WINDOW,
-        &command_line_);
+        params);
 
     if (out_app_contents)
       *out_app_contents = tab_in_app_window;