Added Ash.SystemMenu.DefaultView.VisibleItems histogram.

ash/test/test_system_tray_item.cc

+// Copyright 2016 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 "ash/test/test_system_tray_item.h"
+
+#include "ash/test/ash_test_base.h"
+#include "base/strings/utf_string_conversions.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/view.h"
+
+namespace ash {
+namespace test {
+
+TestSystemTrayItem::TestSystemTrayItem() : TestSystemTrayItem(UMA_TEST) {}
+
+TestSystemTrayItem::TestSystemTrayItem(SystemTrayItem::UmaType uma_type)
+    : SystemTrayItem(AshTestBase::GetPrimarySystemTray(), uma_type),
+      has_views_(true),
+      views_are_visible_(true),
+      tray_view_(nullptr),
+      default_view_(nullptr),
+      detailed_view_(nullptr),
+      notification_view_(nullptr) {}
+
+TestSystemTrayItem::~TestSystemTrayItem() {}
+
+views::View* TestSystemTrayItem::CreateTrayView(LoginStatus status) {
+  if (!has_views_) {
+    tray_view_ = nullptr;
+    return tray_view_;
+  } else {

[James Cook, 2016/07/21 16:14:00]

nit: no else due to early return

[bruthig, 2016/07/21 17:24:25]

Done.

+    tray_view_ = new views::View;
+    // Add a label so it has non-zero width.
+    tray_view_->SetLayoutManager(new views::FillLayout);
+    tray_view_->AddChildView(new views::Label(base::UTF8ToUTF16("Tray")));
+    tray_view_->SetVisible(views_are_visible_);
+  }
+  return tray_view_;
+}
+
+views::View* TestSystemTrayItem::CreateDefaultView(LoginStatus status) {
+  if (!has_views_) {
+    default_view_ = nullptr;
+    return default_view_;
+  } else {
+    default_view_ = new views::View;
+    default_view_->SetLayoutManager(new views::FillLayout);
+    default_view_->AddChildView(new views::Label(base::UTF8ToUTF16("Default")));
+    default_view_->SetVisible(views_are_visible_);
+  }
+  return default_view_;
+}
+
+views::View* TestSystemTrayItem::CreateDetailedView(LoginStatus status) {
+  if (!has_views_) {
+    detailed_view_ = nullptr;
+    return detailed_view_;
+  } else {
+    detailed_view_ = new views::View;
+    detailed_view_->SetLayoutManager(new views::FillLayout);
+    detailed_view_->AddChildView(
+        new views::Label(base::UTF8ToUTF16("Detailed")));
+    detailed_view_->SetVisible(views_are_visible_);
+  }
+  return detailed_view_;
+}
+
+views::View* TestSystemTrayItem::CreateNotificationView(LoginStatus status) {
+  if (!has_views_) {
+    notification_view_ = nullptr;
+    return notification_view_;
+  } else {
+    notification_view_ = new views::View;
+    notification_view_->SetVisible(views_are_visible_);
+  }
+  return notification_view_;
+}
+
+void TestSystemTrayItem::DestroyTrayView() {
+  tray_view_ = nullptr;
+}
+
+void TestSystemTrayItem::DestroyDefaultView() {
+  default_view_ = nullptr;
+}
+
+void TestSystemTrayItem::DestroyDetailedView() {
+  detailed_view_ = nullptr;
+}
+
+void TestSystemTrayItem::DestroyNotificationView() {
+  notification_view_ = nullptr;
+}
+
+void TestSystemTrayItem::UpdateAfterLoginStatusChange(LoginStatus status) {}
+
+}  // namespace test
+}  // namespace ash