Aura: Add --aura-laptop-mode to fill the workspace with a single window.

ui/aura_shell/laptop_mode_layout_manager.cc

Index: ui/aura_shell/laptop_mode_layout_manager.cc
diff --git a/ui/aura_shell/laptop_mode_layout_manager.cc b/ui/aura_shell/laptop_mode_layout_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9872e6efa4756121bee4aa322330e67343b19de4
--- /dev/null
+++ b/ui/aura_shell/laptop_mode_layout_manager.cc
@@ -0,0 +1,64 @@
+// Copyright (c) 2011 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 "ui/aura_shell/laptop_mode_layout_manager.h"
+
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/window.h"
+#include "ui/aura_shell/window_util.h"
+#include "ui/base/ui_base_types.h"
+#include "ui/gfx/screen.h"
+
+namespace aura_shell {
+namespace internal {
+
+LaptopModeLayoutManager::LaptopModeLayoutManager() {
+}
+
+LaptopModeLayoutManager::~LaptopModeLayoutManager() {
+  for (Windows::const_iterator i = windows_.begin(); i != windows_.end(); ++i)
+    (*i)->RemoveObserver(this);
+}
+
+void LaptopModeLayoutManager::OnWindowResized() {
+}
+
+void LaptopModeLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
+  windows_.insert(child);
+  child->AddObserver(this);
+  if (child->GetProperty(aura::kShowStateKey))
+    UpdateBoundsFromShowState(child);
+}
+
+void LaptopModeLayoutManager::OnWillRemoveWindowFromLayout(
+    aura::Window* child) {
+  windows_.erase(child);
+  child->RemoveObserver(this);
+}
+
+void LaptopModeLayoutManager::OnChildWindowVisibilityChanged(
+    aura::Window* child,
+    bool visibile) {
+}
+
+void LaptopModeLayoutManager::SetChildBounds(
+    aura::Window* child,
+    const gfx::Rect& requested_bounds) {
+  gfx::Rect bounds = requested_bounds;
+  // Avoid a janky resize on startup by ensuring the initial bounds fill the
+  // screen.
+  if (child->GetIntProperty(aura::kShowStateKey) == ui::SHOW_STATE_MAXIMIZED)
+    bounds = gfx::Screen::GetPrimaryMonitorBounds();
+  SetChildBoundsDirect(child, bounds);
+}
+
+void LaptopModeLayoutManager::OnWindowPropertyChanged(aura::Window* window,
+                                                      const char* name,
+                                                      void* old) {
+  if (name == aura::kShowStateKey)
+    UpdateBoundsFromShowState(window);
+}
+
+}  // namespace internal
+}  // namespace aura_shell