Introduce LaunchParams struct for opening chrome apps.

chrome/browser/chromeos/extensions/file_manager_util.cc

Index: chrome/browser/chromeos/extensions/file_manager_util.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager_util.cc b/chrome/browser/chromeos/extensions/file_manager_util.cc
index 49cd9defe41640b7cd0f0c272f45f5124a378a49..ff6b4b8604ac621bc544db9156aad5e498767694 100644
--- a/chrome/browser/chromeos/extensions/file_manager_util.cc
+++ b/chrome/browser/chromeos/extensions/file_manager_util.cc
@@ -449,8 +449,11 @@ void OpenFileBrowser(const FilePath& path,
     return;
 
   content::RecordAction(UserMetricsAction("ShowFileBrowserFullTab"));
-  application_launch::OpenApplication(profile, extension,
-      extension_misc::LAUNCH_WINDOW, GURL(url), NEW_FOREGROUND_TAB, NULL);
+  application_launch::LaunchParams params(profile, extension,
+                                          extension_misc::LAUNCH_WINDOW,
+                                          NEW_FOREGROUND_TAB);
+  params.override_url = GURL(url);
+  application_launch::OpenApplication(params);
 }
 
 void ViewRemovableDrive(const FilePath& path) {
@@ -644,9 +647,11 @@ bool ExecuteBuiltinHandler(Browser* browser, const FilePath& path,
     if (!extension)
       return false;
 
-    application_launch::OpenApplication(
-        profile, extension, extension_misc::LAUNCH_WINDOW,
-        GetVideoPlayerUrl(url), NEW_FOREGROUND_TAB, NULL);
+    application_launch::LaunchParams params(profile, extension,
+                                            extension_misc::LAUNCH_WINDOW,
+                                            NEW_FOREGROUND_TAB);
+    params.override_url = GetVideoPlayerUrl(url);
+    application_launch::OpenApplication(params);
     return true;
   }