Use FakeDesktopMediaList for Desktop Capture API tests.

chrome/browser/media/fake_desktop_media_list.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/fake_desktop_media_list.h"
+
+#include "chrome/browser/media/desktop_media_list_observer.h"
+#include "ui/gfx/skia_util.h"
+
+FakeDesktopMediaList::FakeDesktopMediaList() : observer_(NULL) {}
+FakeDesktopMediaList::~FakeDesktopMediaList() {}
+
+void FakeDesktopMediaList::AddSource(int id) {
+  Source source;
+  source.id = content::DesktopMediaID(content::DesktopMediaID::TYPE_WINDOW, id);
+  source.name = base::Int64ToString16(id);
+
+  sources_.push_back(source);
+  observer_->OnSourceAdded(sources_.size() - 1);
+}
+
+void FakeDesktopMediaList::RemoveSource(int index) {
+  sources_.erase(sources_.begin() + index);
+  observer_->OnSourceRemoved(sources_.size() - 1);
+}
+
+void FakeDesktopMediaList::SetSourceThumbnail(int index) {
+  sources_[index].thumbnail = thumbnail_;
+  observer_->OnSourceThumbnailChanged(index);
+}
+
+void FakeDesktopMediaList::SetSourceName(int index, string16 name) {
+  sources_[index].name = name;
+  observer_->OnSourceNameChanged(index);
+}
+
+void FakeDesktopMediaList::SetUpdatePeriod(base::TimeDelta period) {}
+
+void FakeDesktopMediaList::SetThumbnailSize(const gfx::Size& thumbnail_size) {}
+
+void FakeDesktopMediaList::SetViewDialogWindowId(
+    content::DesktopMediaID::Id dialog_id) {}
+
+void FakeDesktopMediaList::StartUpdating(DesktopMediaListObserver* observer) {
+  observer_ = observer;
+
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, 150, 150);
+  bitmap.allocPixels();
+  bitmap.eraseRGB(0, 255, 0);
+  thumbnail_ = gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
+}
+
+int FakeDesktopMediaList::GetSourceCount() const { return sources_.size(); }
+
+const DesktopMediaList::Source& FakeDesktopMediaList::GetSource(
+    int index) const {
+  return sources_[index];
+}