Pass command line arguments onto platform apps which provide the right intent.

chrome/browser/ui/panels/panel_app_browsertest.cc

Index: chrome/browser/ui/panels/panel_app_browsertest.cc
diff --git a/chrome/browser/ui/panels/panel_app_browsertest.cc b/chrome/browser/ui/panels/panel_app_browsertest.cc
index 541aef5b155113cc64af8234f64d57561a1b5441..feb80f1a3e93a5c1e6c1d5bd6eb04a4e04f16efd 100644
--- a/chrome/browser/ui/panels/panel_app_browsertest.cc
+++ b/chrome/browser/ui/panels/panel_app_browsertest.cc
@@ -54,7 +54,8 @@ class PanelAppBrowserTest : public ExtensionBrowserTest {
         // Overriding manifest to open in a panel.
         extension_misc::LAUNCH_PANEL,
         GURL(),
-        NEW_WINDOW);
+        NEW_WINDOW,
+        NULL);
 
     // Now we have a new browser instance.
     EXPECT_EQ(browser_count + 1, BrowserList::size());