Do not add TabContents from packaged apps to the task manager.

chrome/browser/extensions/platform_app_browsertest_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_BROWSERTEST_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_BROWSERTEST_UTIL_H_
 
 
 #include "chrome/browser/extensions/extension_apitest.h"
 
 
 namespace content {
 class WebContents;
 }
 
 class CommandLine;
 class ShellWindow;
 
 namespace extensions {
 class Extension;
 
 class PlatformAppBrowserTest : public ExtensionApiTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;
 
  protected:
   // Runs the app named |name| out of the platform_apps subdirectory. Waits
   // until it is launched.
-  const Extension* LoadAndLaunchPlatformApp(const char* name);
+  static const Extension* LoadAndLaunchPlatformApp(
+      Browser* browser, NotificationObserver* observer,
+      FilePath test_data_dir_, const char* name);
+  const Extension* LoadAndLaunchPlatformApp(const char* name) {
+    return LoadAndLaunchPlatformApp(browser(), this, test_data_dir_, name);
+  }
 
   // Installs and runs the app named |name| out of the platform_apps
   // subdirectory. Waits until it is launched.
   const Extension* InstallAndLaunchPlatformApp(const char* name);
 
   // Gets the WebContents associated with the first shell window that is found
   // (most tests only deal with one platform app window, so this is good
   // enough).
   content::WebContents* GetFirstShellWindowWebContents();
 
@@ skipping 24 matching lines @@
   // Creates an empty shell window for |extension|.
   ShellWindow* CreateShellWindow(const Extension* extension);
 
   // Closes |window| and waits until it's gone.
   void CloseShellWindow(ShellWindow* window);
 };
 
 }
 
 #endif  // CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_BROWSERTEST_UTIL_H_