Add AshDesktopMediaList and enable Desktop Capture API on Chrome OS.

chrome/browser/media/ash_desktop_media_list_unittest.cc

+// Copyright 2013 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 "chrome/browser/media/ash_desktop_media_list.h"
+
+#include "ash/test/ash_test_base.h"
+#include "base/message_loop/message_loop.h"
+#include "chrome/browser/media/desktop_media_list_observer.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/aura/window.h"
+#include "ui/compositor/test/test_context_factory.h"
+
+int kThumbnailSize = 100;
+
+class MockDesktopMediaListObserver : public DesktopMediaListObserver {
+ public:
+  MOCK_METHOD1(OnSourceAdded, void(int index));
+  MOCK_METHOD1(OnSourceRemoved, void(int index));
+  MOCK_METHOD1(OnSourceNameChanged, void(int index));
+  MOCK_METHOD1(OnSourceThumbnailChanged, void(int index));
+};
+
+
+class AshDesktopMediaListTest : public ash::test::AshTestBase {
+ public:
+  AshDesktopMediaListTest() {}
+  virtual ~AshDesktopMediaListTest() {}
+
+  void CreateList(int source_types) {
+    list_.reset(new AshDesktopMediaList(source_types));
+    list_->SetUpdatePeriod(base::TimeDelta::FromMilliseconds(0));
+    list_->SetThumbnailSize(gfx::Size(kThumbnailSize, kThumbnailSize));
+  }
+
+ protected:
+  MockDesktopMediaListObserver observer_;
+  scoped_ptr<AshDesktopMediaList> list_;
+  DISALLOW_COPY_AND_ASSIGN(AshDesktopMediaListTest);
+};
+
+ACTION(QuitMessageLoop) {
+  base::MessageLoop::current()->PostTask(
+      FROM_HERE, base::MessageLoop::QuitClosure());
+}
+
+TEST_F(AshDesktopMediaListTest, Screen) {
+  CreateList(AshDesktopMediaList::SCREENS | AshDesktopMediaList::WINDOWS);
+
+  EXPECT_CALL(observer_, OnSourceAdded(0))
+      .WillOnce(QuitMessageLoop());
+  list_->StartUpdating(&observer_);
+  base::MessageLoop::current()->Run();
+}
+
+TEST_F(AshDesktopMediaListTest, OneWindow) {
+  CreateList(AshDesktopMediaList::SCREENS | AshDesktopMediaList::WINDOWS);
+
+  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));
+
+  EXPECT_CALL(observer_, OnSourceAdded(0));
+  EXPECT_CALL(observer_, OnSourceAdded(1))
+      .WillOnce(QuitMessageLoop());
+  EXPECT_CALL(observer_, OnSourceRemoved(1))
+      .WillOnce(QuitMessageLoop());
+
+  list_->StartUpdating(&observer_);
+  base::MessageLoop::current()->Run();
+  window.reset();
+  base::MessageLoop::current()->Run();
+}
+
+TEST_F(AshDesktopMediaListTest, ScreenOnly) {
+  CreateList(AshDesktopMediaList::SCREENS | AshDesktopMediaList::WINDOWS);
+
+  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));
+
+  EXPECT_CALL(observer_, OnSourceAdded(0))
+      .WillOnce(QuitMessageLoop());
+
+  list_->StartUpdating(&observer_);
+  base::MessageLoop::current()->Run();
+}
+
+TEST_F(AshDesktopMediaListTest, WindowOnly) {
+  CreateList(AshDesktopMediaList::WINDOWS);
+
+  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));
+
+  EXPECT_CALL(observer_, OnSourceAdded(0))
+      .WillOnce(QuitMessageLoop());
+  EXPECT_CALL(observer_, OnSourceRemoved(0))
+      .WillOnce(QuitMessageLoop());
+
+  list_->StartUpdating(&observer_);
+  base::MessageLoop::current()->Run();
+  window.reset();
+  base::MessageLoop::current()->Run();
+}