athena: Add the concept of Activity and related managers.

athena/ui/sample_task.cc

+// Copyright 2014 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 "athena/ui/sample_task.h"
+
+#include "ui/aura/window.h"
+
+SampleTask::SampleTask(SkColor color,
+                       SkColor content_color,
+                       const std::string& title)
+    : color_(color),
+      content_color_(content_color),
+      title_(title) {
+}
+
+SampleTask::~SampleTask() {
+}
+
+SkColor SampleTask::GetRepresentativeColor() {
+  return color_;
+}
+
+std::string SampleTask::GetTitle() {
+  return title_;
+}
+
+aura::Window* SampleTask::GetNativeWindow() {
+  if (!window_) {
+    window_.reset(new aura::Window(NULL));
+    window_->Init(aura::WINDOW_LAYER_SOLID_COLOR);
+    window_->layer()->SetColor(content_color_);
+  }
+  return window_.get();
+}