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

chrome/browser/extensions/extension_browsertest.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_EXTENSION_BROWSERTEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 33 matching lines @@
     // them for testing).
     kFlagAllowOldManifestVersions = 1 << 3,
   };
 
   ExtensionBrowserTest();
   virtual ~ExtensionBrowserTest();
 
   // InProcessBrowserTest
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;
 
-  const extensions::Extension* LoadExtension(const FilePath& path);
+  static const extensions::Extension* LoadExtension(
+      Browser* browser, NotificationObserver* observer, const FilePath& path);
+  const extensions::Extension* LoadExtension(const FilePath& path) {
+    return LoadExtension(browser(), this, path);
+  }
 
   // Same as above, but enables the extension in incognito mode first.
   const extensions::Extension* LoadExtensionIncognito(const FilePath& path);
 
-  const extensions::Extension* LoadExtensionWithFlags(
+  static const extensions::Extension* LoadExtensionWithFlags(
+      Browser* browser, NotificationObserver* observer,
       const FilePath& path, int flags);
 
+  const extensions::Extension* LoadExtensionWithFlags(
+      const FilePath& path, int flags) {
+    return LoadExtensionWithFlags(browser(), this, path, flags);
+  }
   // Loads extension and imitates that it is a component extension.
   const extensions::Extension* LoadExtensionAsComponent(const FilePath& path);
 
   // Pack the extension in |dir_path| into a crx file and return its path.
   // Return an empty FilePath if there were errors.
   FilePath PackExtension(const FilePath& dir_path);
 
   // Pack the extension in |dir_path| into a crx file at |crx_path|, using the
   // key |pem_path|. If |pem_path| does not exist, create a new key at
   // |pem_out_path|.
@@ skipping 159 matching lines @@
       extensions::Extension::Location install_source);
   const extensions::Extension* InstallOrUpdateExtension(
       const std::string& id,
       const FilePath& path,
       InstallUIType ui_type,
       int expected_change,
       extensions::Extension::Location install_source,
       Browser* browser,
       bool from_webstore);
 
-  bool WaitForExtensionViewsToLoad();
+  static bool WaitForExtensionViewsToLoad(
+      Browser* browser, NotificationObserver* observer);
+  bool WaitForExtensionViewsToLoad() {
+    return WaitForExtensionViewsToLoad(browser(), this);
+  }
 
   // When waiting for page action count to change, we wait until it reaches this
   // value.
   int target_page_action_count_;
 
   // When waiting for visible page action count to change, we wait until it
   // reaches this value.
   int target_visible_page_action_count_;
 
   // Make the current channel "dev" for the duration of the test.
   extensions::Feature::ScopedCurrentChannel current_channel_;
 
   // Disable external install UI.
   extensions::FeatureSwitch::ScopedOverride
       override_prompt_for_external_extensions_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_