Expands the chrome.experimental.processes extension API....

chrome/browser/extensions/extension_processes_apitest.cc

 // Copyright (c) 2010 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/command_line.h"
+#include "chrome/browser/browser.h"
+#include "chrome/browser/browser_window.h"
 #include "chrome/browser/extensions/extension_apitest.h"
+#include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/chrome_switches.h"
 
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, Processes) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
 
-  ASSERT_TRUE(RunExtensionTest("processes")) << message_;
+  ASSERT_TRUE(RunExtensionTest("processes/api")) << message_;
 }
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ProcessesVsTaskManager) {
+  CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kEnableExperimentalExtensionApis);
+
+  // Ensure task manager is not yet updating
+  TaskManagerModel* model = TaskManager::GetInstance()->model();
+  EXPECT_EQ(0, model->update_requests_);
+  EXPECT_EQ(TaskManagerModel::IDLE, model->update_state_);
+
+  // Load extension that adds listener in background page
+  ASSERT_TRUE(LoadExtension(
+      test_data_dir_.AppendASCII("processes").AppendASCII("onupdated")));
+
+  // Ensure the task manager has started updating
+  EXPECT_EQ(1, model->update_requests_);
+  EXPECT_EQ(TaskManagerModel::TASK_PENDING, model->update_state_);
+
+  // Now show the task manager
+  browser()->window()->ShowTaskManager();
+  EXPECT_EQ(2, model->update_requests_);
+  EXPECT_EQ(TaskManagerModel::TASK_PENDING, model->update_state_);
+
+  // Unload the extension and check that listener count decreases
+  UnloadExtension(last_loaded_extension_id_);
+  EXPECT_EQ(1, model->update_requests_);
+}