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

chrome/browser/extensions/platform_app_browsertest_util.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 "chrome/browser/extensions/platform_app_browsertest_util.h"
 
 #include "base/command_line.h"
 #include "base/stringprintf.h"
 #include "chrome/browser/extensions/api/tabs/tabs.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
 
 using content::WebContents;
 
 namespace utils = extension_function_test_utils;
 
 namespace extensions {
 
+MockExternalUrlController::MockExternalUrlController() {
+}
+
+MockExternalUrlController::~MockExternalUrlController() {
+}
+
+content::WebContents* MockExternalUrlController::OpenURLFromTab(
+      content::WebContents* source,
+      const content::OpenURLParams& params) {
+  // Delete useless web content first to
+  // avoid a potential leak in a render process host.
+  delete source;
+
+  // Force to open in a new tab.
+  WindowOpenDisposition disposition = params.disposition;
+  content::OpenURLParams new_tab_params = params;
+  new_tab_params.disposition =
+      disposition == NEW_BACKGROUND_TAB ? disposition : NEW_FOREGROUND_TAB;
+  for (BrowserList::const_iterator i = BrowserList::begin();
+      i != BrowserList::end(); ++i) {
+    if ((*i)->is_type_tabbed()) {
+      Browser* browser = *i;
+      content::WebContents* new_tab = browser->OpenURL(new_tab_params);
+      browser->window()->Show();
+      return new_tab;
+    }
+  }
+  return NULL;
+}
+
+PlatformAppBrowserTest::PlatformAppBrowserTest() {
+}
+
+PlatformAppBrowserTest::~PlatformAppBrowserTest() {
+}
+
 void PlatformAppBrowserTest::SetUpCommandLine(CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   command_line->AppendSwitch(switches::kEnableExperimentalExtensionApis);
 }
 
+void PlatformAppBrowserTest::SetUpOnMainThread() {
+  mock_external_url_controller_.reset(new MockExternalUrlController());
+  ShellWindow::SetExternalUrlControllerForTesting(
+      mock_external_url_controller_.get());
+}
+
 const Extension* PlatformAppBrowserTest::LoadAndLaunchPlatformApp(
     const char* name) {
   content::WindowedNotificationObserver app_loaded_observer(
       content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
       content::NotificationService::AllSources());
 
   const Extension* extension = LoadExtension(
       test_data_dir_.AppendASCII("platform_apps").AppendASCII(name));
   EXPECT_TRUE(extension);
 
@@ skipping 101 matching lines @@
 
 void PlatformAppBrowserTest::CloseShellWindow(ShellWindow* window) {
   content::WindowedNotificationObserver destroyed_observer(
       content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
       content::NotificationService::AllSources());
   window->GetBaseWindow()->Close();
   destroyed_observer.Wait();
 }
 
 }  // namespace extensions