[Part 5 of 6] Move TaskManagerTester to the task_management directory.

chrome/browser/task_manager/task_manager_browsertest_util.cc

Index: chrome/browser/task_manager/task_manager_browsertest_util.cc
diff --git a/chrome/browser/task_manager/task_manager_browsertest_util.cc b/chrome/browser/task_manager/task_manager_browsertest_util.cc
index a6944f7dcf4d27ea43a054b39b8b261d46a5c60a..a84fce90118ff403652a08fe6a437854154d08d1 100644
--- a/chrome/browser/task_manager/task_manager_browsertest_util.cc
+++ b/chrome/browser/task_manager/task_manager_browsertest_util.cc
@@ -7,7 +7,6 @@
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/location.h"
-#include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/pattern.h"
@@ -18,15 +17,7 @@
 #include "base/thread_task_runner_handle.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/sessions/session_tab_helper.h"
-#include "chrome/browser/task_management/task_manager_interface.h"
-#include "chrome/browser/task_manager/legacy_task_manager_tester.h"
-#include "chrome/browser/task_manager/resource_provider.h"
-#include "chrome/browser/task_manager/task_manager.h"
-#include "chrome/browser/ui/browser_dialogs.h"
-#include "chrome/browser/ui/task_manager/task_manager_table_model.h"
-#include "chrome/common/chrome_switches.h"
+#include "chrome/browser/task_management/task_manager_tester.h"
 #include "chrome/grit/generated_resources.h"
 #include "extensions/strings/grit/extensions_strings.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -38,154 +29,7 @@ namespace browsertest_util {
 
 namespace {
 
-// Returns whether chrome::ShowTaskManager() will, for the current platform and
-// command line, show a view backed by a task_management::TaskManagerTableModel.
-bool IsNewTaskManagerViewEnabled() {
-#if defined(OS_MACOSX)
-  if (!chrome::ToolkitViewsDialogsEnabled())
-    return false;
-#endif
-  return switches::NewTaskManagerEnabled();
-}
-
-// Temporarily intercepts the calls between a TableModel and its Observer,
-// running |callback| whenever anything happens.
-class ScopedInterceptTableModelObserver : public ui::TableModelObserver {
- public:
-  ScopedInterceptTableModelObserver(
-      ui::TableModel* model_to_intercept,
-      ui::TableModelObserver* real_table_model_observer,
-      const base::Closure& callback)
-      : model_to_intercept_(model_to_intercept),
-        real_table_model_observer_(real_table_model_observer),
-        callback_(callback) {
-    model_to_intercept_->SetObserver(this);
-  }
-
-  ~ScopedInterceptTableModelObserver() override {
-    model_to_intercept_->SetObserver(real_table_model_observer_);
-  }
-
-  // ui::TableModelObserver:
-  void OnModelChanged() override {
-    real_table_model_observer_->OnModelChanged();
-    callback_.Run();
-  }
-  void OnItemsChanged(int start, int length) override {
-    real_table_model_observer_->OnItemsChanged(start, length);
-    callback_.Run();
-  }
-  void OnItemsAdded(int start, int length) override {
-    real_table_model_observer_->OnItemsAdded(start, length);
-    callback_.Run();
-  }
-  void OnItemsRemoved(int start, int length) override {
-    real_table_model_observer_->OnItemsRemoved(start, length);
-    callback_.Run();
-  }
-
- private:
-  ui::TableModel* model_to_intercept_;
-  ui::TableModelObserver* real_table_model_observer_;
-  base::Closure callback_;
-};
-
-}  // namespace
-
-// Implementation of TaskManagerTester for the 'new' TaskManager.
-class TaskManagerTesterImpl : public TaskManagerTester {
- public:
-  explicit TaskManagerTesterImpl(const base::Closure& on_resource_change)
-      : model_(GetRealModel()) {
-    // Eavesdrop the model->view conversation, since the model only supports
-    // single observation.
-    if (!on_resource_change.is_null()) {
-      interceptor_.reset(new ScopedInterceptTableModelObserver(
-          model_, model_->table_model_observer_, on_resource_change));
-    }
-  }
-
-  ~TaskManagerTesterImpl() override {
-    CHECK_EQ(GetRealModel(), model_) << "Task Manager should not be hidden "
-                                        "while TaskManagerTester is alive. "
-                                        "This indicates a test bug.";
-  }
-
-  // TaskManagerTester:
-  int GetRowCount() override { return model_->RowCount(); }
-
-  base::string16 GetRowTitle(int row) override {
-    return model_->GetText(row, IDS_TASK_MANAGER_TASK_COLUMN);
-  }
-
-  void ToggleColumnVisibility(ColumnSpecifier column) override {
-    int column_id = 0;
-    switch (column) {
-      case ColumnSpecifier::COLUMN_NONE:
-        return;
-      case ColumnSpecifier::SQLITE_MEMORY_USED:
-        column_id = IDS_TASK_MANAGER_SQLITE_MEMORY_USED_COLUMN;
-        break;
-      case ColumnSpecifier::V8_MEMORY_USED:
-      case ColumnSpecifier::V8_MEMORY:
-        column_id = IDS_TASK_MANAGER_JAVASCRIPT_MEMORY_ALLOCATED_COLUMN;
-        break;
-    }
-    model_->ToggleColumnVisibility(column_id);
-  }
-
-  int64_t GetColumnValue(ColumnSpecifier column, int row) override {
-    task_management::TaskId task_id = model_->tasks_[row];
-    int64_t value = 0;
-    int64_t ignored = 0;
-    bool success = false;
-
-    switch (column) {
-      case ColumnSpecifier::COLUMN_NONE:
-        break;
-      case ColumnSpecifier::V8_MEMORY:
-        success = task_manager()->GetV8Memory(task_id, &value, &ignored);
-        break;
-      case ColumnSpecifier::V8_MEMORY_USED:
-        success = task_manager()->GetV8Memory(task_id, &ignored, &value);
-        break;
-      case ColumnSpecifier::SQLITE_MEMORY_USED:
-        value = task_manager()->GetSqliteMemoryUsed(task_id);
-        success = true;
-        break;
-    }
-    if (!success)
-      return 0;
-    return value;
-  }
-
-  int32_t GetTabId(int row) override {
-    task_management::TaskId task_id = model_->tasks_[row];
-    return task_manager()->GetTabId(task_id);
-  }
-
-  void Kill(int row) override { model_->KillTask(row); }
-
- private:
-  task_management::TaskManagerInterface* task_manager() {
-    return model_->observed_task_manager();
-  }
-
-  // Returns the TaskManagerTableModel for the the visible NewTaskManagerView.
-  static task_management::TaskManagerTableModel* GetRealModel() {
-    CHECK(IsNewTaskManagerViewEnabled());
-    // This downcast is safe, as long as the new task manager is enabled.
-    task_management::TaskManagerTableModel* result =
-        static_cast<task_management::TaskManagerTableModel*>(
-            chrome::ShowTaskManager(nullptr));
-    return result;
-  }
-
-  task_management::TaskManagerTableModel* model_;
-  std::unique_ptr<ScopedInterceptTableModelObserver> interceptor_;
-};
-
-namespace {
+using TaskManagerTester = task_management::TaskManagerTester;
 
 // Helper class to run a message loop until a TaskManagerTester is in an
 // expected state. If timeout occurs, an ASCII version of the task manager's
@@ -201,13 +45,8 @@ class ResourceChangeObserver {
         title_pattern_(title_pattern),
         column_specifier_(column_specifier),
         min_column_value_(min_column_value) {
-    base::Closure callback = base::Bind(
-        &ResourceChangeObserver::OnResourceChange, base::Unretained(this));
-
-    if (IsNewTaskManagerViewEnabled())
-      task_manager_tester_.reset(new TaskManagerTesterImpl(callback));
-    else
-      task_manager_tester_ = CreateLegacyTaskManagerTester(callback);
+    task_manager_tester_ = TaskManagerTester::Create(base::Bind(
+        &ResourceChangeObserver::OnResourceChange, base::Unretained(this)));
   }
 
   void RunUntilSatisfied() {
@@ -320,13 +159,6 @@ class ResourceChangeObserver {
 
 }  // namespace
 
-std::unique_ptr<TaskManagerTester> GetTaskManagerTester() {
-  if (IsNewTaskManagerViewEnabled())
-    return base::WrapUnique(new TaskManagerTesterImpl(base::Closure()));
-  else
-    return CreateLegacyTaskManagerTester(base::Closure());
-}
-
 void WaitForTaskManagerRows(int required_count,
                             const base::string16& title_pattern) {
   const int column_value_dont_care = 0;