Links in platform apps should open in the system default browser.

chrome/browser/extensions/platform_app_browsertest.cc

 // Copyright (c) 2012 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 "base/bind.h"
+#include "base/command_line.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/automation/automation_util.h"
 #include "chrome/browser/tab_contents/render_view_context_menu.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/platform_app_browsertest_util.h"
 #include "chrome/browser/extensions/platform_app_launcher.h"
@@ skipping 465 matching lines @@
 // function to get the native file system path of a file they are launched with.
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, GetDisplayPath) {
   SetCommandLineArg(kTestFilePath);
   ASSERT_TRUE(RunPlatformAppTest("platform_apps/get_display_path"))
       << message_;
 }
 
 #endif  // defined(OS_CHROMEOS)
 
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, OpenLink) {
+  ClearCommandLineArgs();
+  CommandLine::ForCurrentProcess()->AppendSwitch("OpenLinkTest");
   ASSERT_TRUE(StartTestServer());
   content::WindowedNotificationObserver observer(
       chrome::NOTIFICATION_TAB_ADDED,
       content::Source<content::WebContentsDelegate>(browser()));
   LoadAndLaunchPlatformApp("open_link");
   observer.Wait();
   ASSERT_EQ(2, browser()->tab_count());
 }
 
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, MutationEventsDisabled) {
@@ skipping 62 matching lines @@
 
   // Tell javascript to open a third window.
   page3_listener.Reply("continue");
 
   // Wait for javascript to verify that the third window got the restored size
   // and explicitly specified coordinates.
   ASSERT_TRUE(done3_listener.WaitUntilSatisfied());
 }
 
 }  // namespace extensions