ash: Allow web pages to use the Ctrl-M minimize shortcut

ash/accelerators/accelerator_commands.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 "ash/accelerators/accelerator_commands.h"
+
+#include "ash/shell.h"
+#include "ash/shell_delegate.h"
+#include "ash/wm/window_cycle_controller.h"
+#include "ash/wm/window_util.h"
+
+namespace ash {
+namespace accelerators {
+
+bool ToggleMinimized() {
+  aura::Window* window = wm::GetActiveWindow();
+  // Attempt to restore the window that would be cycled through next from
+  // the launcher when there is no active window.
+  if (!window) {
+    ash::Shell::GetInstance()->window_cycle_controller()->
+        HandleCycleWindow(WindowCycleController::FORWARD, false);
+    return true;
+  }
+  // Disable the shortcut for minimizing full screen window due to
+  // crbug.com/131709, which is a crashing issue related to minimizing
+  // full screen pepper window.
+  if (wm::IsWindowFullscreen(window) || !wm::CanMinimizeWindow(window))
+    return false;
+  ash::Shell::GetInstance()->delegate()->RecordUserMetricsAction(
+      ash::UMA_MINIMIZE_PER_KEY);
+  wm::MinimizeWindow(window);
+  return true;
+}
+
+}  // namespace accelerators
+}  // namespace ash