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 ba3b086d414e4fc8f2ee20573433872db8ef3690..f2a2ce9c651fba4564a91e8ec4ec88e18387641d 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());