Separates out accelerators using non-common types

ash/accelerators/accelerator_controller.cc

Index: ash/accelerators/accelerator_controller.cc
diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 8b354056338afd208391fd72f395d6a1d869dcef..da65a610a90dc696d73c0fd1d3954e4173d3e9f6 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -4,84 +4,36 @@
 
 #include "ash/accelerators/accelerator_controller.h"
 
-#include <algorithm>
-#include <cmath>
-#include <string>
-#include <utility>
-
 #include "ash/accelerators/accelerator_commands.h"
+#include "ash/accelerators/accelerator_controller_delegate.h"
 #include "ash/accelerators/debug_commands.h"
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/accessibility_types.h"
-#include "ash/common/ash_switches.h"
 #include "ash/common/focus_cycler.h"
-#include "ash/common/gpu_support.h"
 #include "ash/common/media_delegate.h"
 #include "ash/common/multi_profile_uma.h"
 #include "ash/common/session/session_state_delegate.h"
-#include "ash/common/shelf/shelf_model.h"
 #include "ash/common/shell_delegate.h"
-#include "ash/common/shell_window_ids.h"
 #include "ash/common/system/brightness_control_delegate.h"
 #include "ash/common/system/keyboard_brightness_control_delegate.h"
-#include "ash/common/system/status_area_widget.h"
-#include "ash/common/system/system_notifier.h"
-#include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
 #include "ash/common/system/volume_control_delegate.h"
-#include "ash/common/system/web_notification/web_notification_tray.h"
-#include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm/mru_window_tracker.h"
 #include "ash/common/wm/overview/window_selector_controller.h"
 #include "ash/common/wm/window_cycle_controller.h"
+#include "ash/common/wm/window_positioning_utils.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
 #include "ash/common/wm_shell.h"
-#include "ash/debug.h"
-#include "ash/display/window_tree_host_manager.h"
+#include "ash/common/wm_window.h"
 #include "ash/ime_control_delegate.h"
-#include "ash/magnifier/magnification_controller.h"
-#include "ash/magnifier/partial_magnification_controller.h"
-#include "ash/new_window_delegate.h"
-#include "ash/root_window_controller.h"
-#include "ash/rotator/screen_rotation_animator.h"
-#include "ash/rotator/window_rotation.h"
-#include "ash/screen_util.h"
-#include "ash/screenshot_delegate.h"
-#include "ash/shelf/shelf.h"
-#include "ash/shelf/shelf_delegate.h"
-#include "ash/shelf/shelf_widget.h"
-#include "ash/shell.h"
-#include "ash/touch/touch_hud_debug.h"
-#include "ash/utility/screenshot_controller.h"
-#include "ash/wm/power_button_controller.h"
-#include "ash/wm/window_state_aura.h"
-#include "ash/wm/window_util.h"
-#include "base/bind.h"
-#include "base/command_line.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/user_metrics.h"
-#include "base/strings/string_split.h"
-#include "base/strings/utf_string_conversions.h"
-#include "ui/aura/env.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/accelerators/accelerator_manager.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animation_sequence.h"
-#include "ui/compositor/layer_animator.h"
-#include "ui/display/screen.h"
-#include "ui/events/event.h"
-#include "ui/events/keycodes/keyboard_codes.h"
-#include "ui/message_center/message_center.h"
-#include "ui/message_center/notification.h"
-#include "ui/message_center/notifier_settings.h"
 
 #if defined(OS_CHROMEOS)
-#include "ash/display/display_configuration_controller.h"
-#include "base/sys_info.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "ui/base/ime/chromeos/ime_keyboard.h"
@@ -93,28 +45,6 @@ namespace {
 
 using base::UserMetricsAction;
 
-// The notification delegate that will be used to open the keyboard shortcut
-// help page when the notification is clicked.
-class DeprecatedAcceleratorNotificationDelegate
-    : public message_center::NotificationDelegate {
- public:
-  DeprecatedAcceleratorNotificationDelegate() {}
-
-  // message_center::NotificationDelegate:
-  bool HasClickedListener() override { return true; }
-
-  void Click() override {
-    if (!WmShell::Get()->GetSessionStateDelegate()->IsUserSessionBlocked())
-      WmShell::Get()->delegate()->OpenKeyboardShortcutHelpPage();
-  }
-
- private:
-  // Private destructor since NotificationDelegate is ref-counted.
-  ~DeprecatedAcceleratorNotificationDelegate() override {}
-
-  DISALLOW_COPY_AND_ASSIGN(DeprecatedAcceleratorNotificationDelegate);
-};
-
 ui::Accelerator CreateAccelerator(ui::KeyboardCode keycode,
                                   int modifiers,
                                   bool trigger_on_press) {
@@ -124,63 +54,6 @@ ui::Accelerator CreateAccelerator(ui::KeyboardCode keycode,
   return accelerator;
 }
 
-// Ensures that there are no word breaks at the "+"s in the shortcut texts such
-// as "Ctrl+Shift+Space".
-void EnsureNoWordBreaks(base::string16* shortcut_text) {
-  std::vector<base::string16> keys =
-      base::SplitString(*shortcut_text, base::ASCIIToUTF16("+"),
-                        base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
-
-  if (keys.size() < 2U)
-    return;
-
-  // The plus sign surrounded by the word joiner to guarantee an non-breaking
-  // shortcut.
-  const base::string16 non_breaking_plus =
-      base::UTF8ToUTF16("\xe2\x81\xa0+\xe2\x81\xa0");
-  shortcut_text->clear();
-  for (size_t i = 0; i < keys.size() - 1; ++i) {
-    *shortcut_text += keys[i];
-    *shortcut_text += non_breaking_plus;
-  }
-
-  *shortcut_text += keys.back();
-}
-
-// Gets the notification message after it formats it in such a way that there
-// are no line breaks in the middle of the shortcut texts.
-base::string16 GetNotificationText(int message_id,
-                                   int old_shortcut_id,
-                                   int new_shortcut_id) {
-  base::string16 old_shortcut = l10n_util::GetStringUTF16(old_shortcut_id);
-  base::string16 new_shortcut = l10n_util::GetStringUTF16(new_shortcut_id);
-  EnsureNoWordBreaks(&old_shortcut);
-  EnsureNoWordBreaks(&new_shortcut);
-
-  return l10n_util::GetStringFUTF16(message_id, new_shortcut, old_shortcut);
-}
-
-void ShowDeprecatedAcceleratorNotification(const char* const notification_id,
-                                           int message_id,
-                                           int old_shortcut_id,
-                                           int new_shortcut_id) {
-  const base::string16 message =
-      GetNotificationText(message_id, old_shortcut_id, new_shortcut_id);
-  std::unique_ptr<message_center::Notification> notification(
-      new message_center::Notification(
-          message_center::NOTIFICATION_TYPE_SIMPLE, notification_id,
-          base::string16(), message,
-          WmShell::Get()->delegate()->GetDeprecatedAcceleratorImage(),
-          base::string16(), GURL(),
-          message_center::NotifierId(
-              message_center::NotifierId::SYSTEM_COMPONENT,
-              system_notifier::kNotifierDeprecatedAccelerator),
-          message_center::RichNotificationData(),
-          new DeprecatedAcceleratorNotificationDelegate));
-  message_center::MessageCenter::Get()->AddNotification(
-      std::move(notification));
-}
-
 void RecordUmaHistogram(const char* histogram_name,
                         DeprecatedAcceleratorUsage sample) {
   auto* histogram = base::LinearHistogram::FactoryGet(
@@ -220,49 +93,6 @@ void HandleRotatePaneFocus(FocusCycler::Direction direction) {
   WmShell::Get()->focus_cycler()->RotateFocus(direction);
 }
 
-void HandleFocusShelf() {
-  base::RecordAction(base::UserMetricsAction("Accel_Focus_Shelf"));
-  WmShell::Get()->focus_cycler()->FocusWidget(
-      Shelf::ForPrimaryDisplay()->shelf_widget());
-}
-
-void HandleLaunchAppN(int n) {
-  base::RecordAction(UserMetricsAction("Accel_Launch_App"));
-  Shelf::ForPrimaryDisplay()->LaunchAppIndexAt(n);
-}
-
-void HandleLaunchLastApp() {
-  base::RecordAction(UserMetricsAction("Accel_Launch_Last_App"));
-  Shelf::ForPrimaryDisplay()->LaunchAppIndexAt(-1);
-}
-
-bool CanHandleMagnifyScreen() {
-  Shell* shell = Shell::GetInstance();
-  return shell->magnification_controller()->IsEnabled() ||
-         shell->partial_magnification_controller()->is_enabled();
-}
-
-// Magnify the screen
-void HandleMagnifyScreen(int delta_index) {
-  if (Shell::GetInstance()->magnification_controller()->IsEnabled()) {
-    // TODO(yoshiki): Move the following logic to MagnificationController.
-    float scale = Shell::GetInstance()->magnification_controller()->GetScale();
-    // Calculate rounded logarithm (base kMagnificationScaleFactor) of scale.
-    int scale_index =
-        std::floor(std::log(scale) / std::log(kMagnificationScaleFactor) + 0.5);
-
-    int new_scale_index = std::max(0, std::min(8, scale_index + delta_index));
-
-    Shell::GetInstance()->magnification_controller()->SetScale(
-        std::pow(kMagnificationScaleFactor, new_scale_index), true);
-  } else if (Shell::GetInstance()
-                 ->partial_magnification_controller()
-                 ->is_enabled()) {
-    float scale = delta_index > 0 ? kDefaultPartialMagnifiedScale : 1;
-    Shell::GetInstance()->partial_magnification_controller()->SetScale(scale);
-  }
-}
-
 void HandleMediaNextTrack() {
   WmShell::Get()->media_delegate()->HandleMediaNextTrack();
 }
@@ -275,28 +105,6 @@ void HandleMediaPrevTrack() {
   WmShell::Get()->media_delegate()->HandleMediaPrevTrack();
 }
 
-bool CanHandleNewIncognitoWindow() {
-  return WmShell::Get()->delegate()->IsIncognitoAllowed();
-}
-
-void HandleNewIncognitoWindow() {
-  base::RecordAction(UserMetricsAction("Accel_New_Incognito_Window"));
-  Shell::GetInstance()->new_window_delegate()->NewWindow(
-      true /* is_incognito */);
-}
-
-void HandleNewTab(const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() == ui::VKEY_T)
-    base::RecordAction(base::UserMetricsAction("Accel_NewTab_T"));
-  Shell::GetInstance()->new_window_delegate()->NewTab();
-}
-
-void HandleNewWindow() {
-  base::RecordAction(base::UserMetricsAction("Accel_New_Window"));
-  Shell::GetInstance()->new_window_delegate()->NewWindow(
-      false /* is_incognito */);
-}
-
 bool CanHandleNextIme(ImeControlDelegate* ime_control_delegate) {
   return ime_control_delegate && ime_control_delegate->CanCycleIme();
 }
@@ -326,11 +134,6 @@ void HandleNextIme(ImeControlDelegate* ime_control_delegate) {
   ime_control_delegate->HandleNextIme();
 }
 
-void HandleOpenFeedbackPage() {
-  base::RecordAction(UserMetricsAction("Accel_Open_Feedback_Page"));
-  Shell::GetInstance()->new_window_delegate()->OpenFeedbackPage();
-}
-
 bool CanHandlePreviousIme(ImeControlDelegate* ime_control_delegate) {
   return ime_control_delegate && ime_control_delegate->CanCycleIme();
 }
@@ -343,100 +146,6 @@ void HandlePreviousIme(ImeControlDelegate* ime_control_delegate,
   // Else: consume the Ctrl+Space ET_KEY_RELEASED event but do not do anything.
 }
 
-void HandleRestoreTab() {
-  base::RecordAction(base::UserMetricsAction("Accel_Restore_Tab"));
-  Shell::GetInstance()->new_window_delegate()->RestoreTab();
-}
-
-display::Display::Rotation GetNextRotation(display::Display::Rotation current) {
-  switch (current) {
-    case display::Display::ROTATE_0:
-      return display::Display::ROTATE_90;
-    case display::Display::ROTATE_90:
-      return display::Display::ROTATE_180;
-    case display::Display::ROTATE_180:
-      return display::Display::ROTATE_270;
-    case display::Display::ROTATE_270:
-      return display::Display::ROTATE_0;
-  }
-  NOTREACHED() << "Unknown rotation:" << current;
-  return display::Display::ROTATE_0;
-}
-
-// Rotates the screen.
-void HandleRotateScreen() {
-  if (Shell::GetInstance()->display_manager()->IsInUnifiedMode())
-    return;
-
-  base::RecordAction(UserMetricsAction("Accel_Rotate_Window"));
-  gfx::Point point = display::Screen::GetScreen()->GetCursorScreenPoint();
-  display::Display display =
-      display::Screen::GetScreen()->GetDisplayNearestPoint(point);
-  const DisplayInfo& display_info =
-      Shell::GetInstance()->display_manager()->GetDisplayInfo(display.id());
-  ScreenRotationAnimator(display.id())
-      .Rotate(GetNextRotation(display_info.GetActiveRotation()),
-              display::Display::ROTATION_SOURCE_USER);
-}
-
-// Rotate the active window.
-void HandleRotateActiveWindow() {
-  base::RecordAction(UserMetricsAction("Accel_Rotate_Window"));
-  aura::Window* active_window = wm::GetActiveWindow();
-  if (active_window) {
-    // The rotation animation bases its target transform on the current
-    // rotation and position. Since there could be an animation in progress
-    // right now, queue this animation so when it starts it picks up a neutral
-    // rotation and position. Use replace so we only enqueue one at a time.
-    active_window->layer()->GetAnimator()->set_preemption_strategy(
-        ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
-    active_window->layer()->GetAnimator()->StartAnimation(
-        new ui::LayerAnimationSequence(
-            new WindowRotation(360, active_window->layer())));
-  }
-}
-
-void HandleShowKeyboardOverlay() {
-  base::RecordAction(UserMetricsAction("Accel_Show_Keyboard_Overlay"));
-  Shell::GetInstance()->new_window_delegate()->ShowKeyboardOverlay();
-}
-
-bool CanHandleShowMessageCenterBubble() {
-  RootWindowController* controller =
-      RootWindowController::ForTargetRootWindow();
-  StatusAreaWidget* status_area_widget =
-      controller->shelf_widget()->status_area_widget();
-  return status_area_widget &&
-         status_area_widget->web_notification_tray()->visible();
-}
-
-void HandleShowMessageCenterBubble() {
-  base::RecordAction(UserMetricsAction("Accel_Show_Message_Center_Bubble"));
-  RootWindowController* controller =
-      RootWindowController::ForTargetRootWindow();
-  StatusAreaWidget* status_area_widget =
-      controller->shelf_widget()->status_area_widget();
-  if (status_area_widget) {
-    WebNotificationTray* notification_tray =
-        status_area_widget->web_notification_tray();
-    if (notification_tray->visible())
-      notification_tray->ShowMessageCenterBubble();
-  }
-}
-
-void HandleShowSystemTrayBubble() {
-  base::RecordAction(UserMetricsAction("Accel_Show_System_Tray_Bubble"));
-  RootWindowController* controller =
-      RootWindowController::ForTargetRootWindow();
-  if (!controller->GetSystemTray()->HasSystemBubble())
-    controller->GetSystemTray()->ShowDefaultView(BUBBLE_CREATE_NEW);
-}
-
-void HandleShowTaskManager() {
-  base::RecordAction(UserMetricsAction("Accel_Show_Task_Manager"));
-  Shell::GetInstance()->new_window_delegate()->ShowTaskManager();
-}
-
 bool CanHandleSwitchIme(ImeControlDelegate* ime_control_delegate,
                         const ui::Accelerator& accelerator) {
   return ime_control_delegate &&
@@ -449,53 +158,6 @@ void HandleSwitchIme(ImeControlDelegate* ime_control_delegate,
   ime_control_delegate->HandleSwitchIme(accelerator);
 }
 
-void HandleTakeWindowScreenshot(ScreenshotDelegate* screenshot_delegate) {
-  base::RecordAction(UserMetricsAction("Accel_Take_Window_Screenshot"));
-  DCHECK(screenshot_delegate);
-  Shell::GetInstance()->screenshot_controller()->StartWindowScreenshotSession(
-      screenshot_delegate);
-}
-
-void HandleTakePartialScreenshot(ScreenshotDelegate* screenshot_delegate) {
-  base::RecordAction(UserMetricsAction("Accel_Take_Partial_Screenshot"));
-  DCHECK(screenshot_delegate);
-  Shell::GetInstance()->screenshot_controller()->StartPartialScreenshotSession(
-      screenshot_delegate);
-}
-
-void HandleTakeScreenshot(ScreenshotDelegate* screenshot_delegate) {
-  base::RecordAction(UserMetricsAction("Accel_Take_Screenshot"));
-  DCHECK(screenshot_delegate);
-  if (screenshot_delegate->CanTakeScreenshot())
-    screenshot_delegate->HandleTakeScreenshotForAllRootWindows();
-}
-
-bool CanHandleToggleAppList(const ui::Accelerator& accelerator,
-                            const ui::Accelerator& previous_accelerator) {
-  if (accelerator.key_code() == ui::VKEY_LWIN) {
-    // If something else was pressed between the Search key (LWIN)
-    // being pressed and released, then ignore the release of the
-    // Search key.
-    if (previous_accelerator.type() != ui::ET_KEY_PRESSED ||
-        previous_accelerator.key_code() != ui::VKEY_LWIN) {
-      return false;
-    }
-
-    // When spoken feedback is enabled, we should neither toggle the list nor
-    // consume the key since Search+Shift is one of the shortcuts the a11y
-    // feature uses. crbug.com/132296
-    if (WmShell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled())
-      return false;
-  }
-  return true;
-}
-
-void HandleToggleAppList(const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() == ui::VKEY_LWIN)
-    base::RecordAction(base::UserMetricsAction("Accel_Search_LWin"));
-  Shell::GetInstance()->ToggleAppList(NULL);
-}
-
 void HandleToggleFullscreen(const ui::Accelerator& accelerator) {
   if (accelerator.key_code() == ui::VKEY_MEDIA_LAUNCH_APP2)
     base::RecordAction(UserMetricsAction("Accel_Fullscreen_F4"));
@@ -508,7 +170,10 @@ void HandleToggleOverview() {
 }
 
 bool CanHandleWindowSnapOrDock() {
-  wm::WindowState* window_state = wm::GetActiveWindowState();
+  WmWindow* active_window = WmShell::Get()->GetActiveWindow();
+  if (!active_window)
+    return false;
+  wm::WindowState* window_state = active_window->GetWindowState();
   // Disable window snapping shortcut key for full screen window due to
   // http://crbug.com/135487.
   return (window_state && window_state->IsUserPositionable() &&
@@ -524,7 +189,9 @@ void HandleWindowSnapOrDock(AcceleratorAction action) {
   const wm::WMEvent event(action == WINDOW_CYCLE_SNAP_DOCK_LEFT
                               ? wm::WM_EVENT_CYCLE_SNAP_DOCK_LEFT
                               : wm::WM_EVENT_CYCLE_SNAP_DOCK_RIGHT);
-  wm::GetActiveWindowState()->OnWMEvent(&event);
+  WmWindow* active_window = WmShell::Get()->GetActiveWindow();
+  DCHECK(active_window);
+  active_window->GetWindowState()->OnWMEvent(&event);
 }
 
 void HandleWindowMinimize() {
@@ -534,22 +201,13 @@ void HandleWindowMinimize() {
 
 bool CanHandlePositionCenter() {
   // Docked windows do not support centering.
-  wm::WindowState* window_state = wm::GetActiveWindowState();
-  return (window_state && !window_state->IsDocked());
+  WmWindow* active_window = WmShell::Get()->GetActiveWindow();
+  return (active_window && !active_window->GetWindowState()->IsDocked());
 }
 
 void HandlePositionCenter() {
   base::RecordAction(UserMetricsAction("Accel_Window_Position_Center"));
-  wm::CenterWindow(wm::GetActiveWindow());
-}
-
-bool CanHandleUnpin() {
-  wm::WindowState* window_state = wm::GetActiveWindowState();
-  return window_state && window_state->IsPinned();
-}
-
-void HandleUnpin() {
-  accelerators::Unpin();
+  wm::CenterWindow(WmShell::Get()->GetActiveWindow());
 }
 
 #if defined(OS_CHROMEOS)
@@ -591,28 +249,6 @@ void HandleSuspend() {
   chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RequestSuspend();
 }
 
-void HandleCrosh() {
-  base::RecordAction(UserMetricsAction("Accel_Open_Crosh"));
-
-  Shell::GetInstance()->new_window_delegate()->OpenCrosh();
-}
-
-void HandleFileManager() {
-  base::RecordAction(UserMetricsAction("Accel_Open_File_Manager"));
-
-  Shell::GetInstance()->new_window_delegate()->OpenFileManager();
-}
-
-void HandleGetHelp() {
-  Shell::GetInstance()->new_window_delegate()->OpenGetHelp();
-}
-
-void HandleSwapPrimaryDisplay() {
-  base::RecordAction(UserMetricsAction("Accel_Swap_Primary_Display"));
-  Shell::GetInstance()->display_configuration_controller()->SetPrimaryDisplayId(
-      ScreenUtil::GetSecondaryDisplay().id(), true /* user_action */);
-}
-
 bool CanHandleCycleUser() {
   return WmShell::Get()->delegate()->IsMultiProfilesEnabled() &&
          WmShell::Get()->GetSessionStateDelegate()->NumberOfLoggedInUsers() > 1;
@@ -656,13 +292,6 @@ void HandleToggleCapsLock() {
   keyboard->SetCapsLockEnabled(!keyboard->CapsLockIsEnabled());
 }
 
-void HandleToggleMirrorMode() {
-  base::RecordAction(UserMetricsAction("Accel_Toggle_Mirror_Mode"));
-  bool mirror = !Shell::GetInstance()->display_manager()->IsInMirrorMode();
-  Shell::GetInstance()->display_configuration_controller()->SetMirrorMode(
-      mirror, true /* user_action */);
-}
-
 void HandleToggleSpokenFeedback() {
   base::RecordAction(UserMetricsAction("Accel_Toggle_Spoken_Feedback"));
 
@@ -670,20 +299,6 @@ void HandleToggleSpokenFeedback() {
       A11Y_NOTIFICATION_SHOW);
 }
 
-bool CanHandleTouchHud() {
-  return RootWindowController::ForTargetRootWindow()->touch_hud_debug();
-}
-
-void HandleTouchHudClear() {
-  RootWindowController::ForTargetRootWindow()->touch_hud_debug()->Clear();
-}
-
-void HandleTouchHudModeChange() {
-  RootWindowController* controller =
-      RootWindowController::ForTargetRootWindow();
-  controller->touch_hud_debug()->ChangeToNextMode();
-}
-
 void HandleVolumeDown(const ui::Accelerator& accelerator) {
   VolumeControlDelegate* volume_delegate =
       WmShell::Get()->system_tray_delegate()->GetVolumeControlDelegate();
@@ -712,8 +327,10 @@ void HandleVolumeUp(const ui::Accelerator& accelerator) {
 ////////////////////////////////////////////////////////////////////////////////
 // AcceleratorController, public:
 
-AcceleratorController::AcceleratorController()
-    : accelerator_manager_(new ui::AcceleratorManager),
+AcceleratorController::AcceleratorController(
+    AcceleratorControllerDelegate* delegate)
+    : delegate_(delegate),
+      accelerator_manager_(new ui::AcceleratorManager),
       accelerator_history_(new ui::AcceleratorHistory) {
   Init();
 }
@@ -787,11 +404,6 @@ void AcceleratorController::SetImeControlDelegate(
   ime_control_delegate_ = std::move(ime_control_delegate);
 }
 
-void AcceleratorController::SetScreenshotDelegate(
-    std::unique_ptr<ScreenshotDelegate> screenshot_delegate) {
-  screenshot_delegate_ = std::move(screenshot_delegate);
-}
-
 bool AcceleratorController::ShouldCloseMenuAndRepostAccelerator(
     const ui::Accelerator& accelerator) const {
   auto itr = accelerators_.find(accelerator);
@@ -827,11 +439,12 @@ bool AcceleratorController::AcceleratorPressed(
         // We always display the notification as long as this entry exists,
         // except for NEXT_IME, we must check to avoid showing it for the wrong
         // shortcut, as Alt+Shift is tricky and trigger the action on release.
-        if (action != NEXT_IME ||
-            (action == NEXT_IME &&
-             ShouldShowDeprecatedNextImeNotification(
-                 accelerator_history_->previous_accelerator()))) {
-          ShowDeprecatedAcceleratorNotification(
+        if (delegate_ &&
+            (action != NEXT_IME ||
+             (action == NEXT_IME &&
+              ShouldShowDeprecatedNextImeNotification(
+                  accelerator_history_->previous_accelerator())))) {
+          delegate_->ShowDeprecatedAcceleratorNotification(
               data->uma_histogram_name, data->notification_message_id,
               data->old_shortcut_id, data->new_shortcut_id);
         }
@@ -960,32 +573,17 @@ bool AcceleratorController::CanPerformAction(
     case DEBUG_TOGGLE_SHOW_FPS_COUNTER:
     case DEBUG_TOGGLE_SHOW_PAINT_RECTS:
       return debug::DebugAcceleratorsEnabled();
-    case MAGNIFY_SCREEN_ZOOM_IN:
-    case MAGNIFY_SCREEN_ZOOM_OUT:
-      return CanHandleMagnifyScreen();
-    case NEW_INCOGNITO_WINDOW:
-      return CanHandleNewIncognitoWindow();
     case NEXT_IME:
       return CanHandleNextIme(ime_control_delegate_.get());
     case PREVIOUS_IME:
       return CanHandlePreviousIme(ime_control_delegate_.get());
-    case SCALE_UI_RESET:
-    case SCALE_UI_UP:
-    case SCALE_UI_DOWN:
-      return accelerators::IsInternalDisplayZoomEnabled();
-    case SHOW_MESSAGE_CENTER_BUBBLE:
-      return CanHandleShowMessageCenterBubble();
     case SWITCH_IME:
       return CanHandleSwitchIme(ime_control_delegate_.get(), accelerator);
-    case TOGGLE_APP_LIST:
-      return CanHandleToggleAppList(accelerator, previous_accelerator);
     case WINDOW_CYCLE_SNAP_DOCK_LEFT:
     case WINDOW_CYCLE_SNAP_DOCK_RIGHT:
       return CanHandleWindowSnapOrDock();
     case WINDOW_POSITION_CENTER:
       return CanHandlePositionCenter();
-    case UNPIN:
-      return CanHandleUnpin();
 #if defined(OS_CHROMEOS)
     case DEBUG_ADD_REMOVE_DISPLAY:
     case DEBUG_SHOW_TOAST:
@@ -1003,43 +601,16 @@ bool AcceleratorController::CanPerformAction(
       return CanHandleCycleUser();
     case TOGGLE_CAPS_LOCK:
       return CanHandleToggleCapsLock(accelerator, previous_accelerator);
-    case TOUCH_HUD_CLEAR:
-    case TOUCH_HUD_MODE_CHANGE:
-      return CanHandleTouchHud();
-    case SWAP_PRIMARY_DISPLAY:
-      return display::Screen::GetScreen()->GetNumDisplays() > 1;
 #endif
     case CYCLE_BACKWARD_MRU:
     case CYCLE_FORWARD_MRU:
     case EXIT:
     case FOCUS_NEXT_PANE:
     case FOCUS_PREVIOUS_PANE:
-    case FOCUS_SHELF:
-    case LAUNCH_APP_0:
-    case LAUNCH_APP_1:
-    case LAUNCH_APP_2:
-    case LAUNCH_APP_3:
-    case LAUNCH_APP_4:
-    case LAUNCH_APP_5:
-    case LAUNCH_APP_6:
-    case LAUNCH_APP_7:
-    case LAUNCH_LAST_APP:
     case MEDIA_NEXT_TRACK:
     case MEDIA_PLAY_PAUSE:
     case MEDIA_PREV_TRACK:
-    case NEW_TAB:
-    case NEW_WINDOW:
-    case OPEN_FEEDBACK_PAGE:
     case PRINT_UI_HIERARCHIES:
-    case RESTORE_TAB:
-    case ROTATE_SCREEN:
-    case ROTATE_WINDOW:
-    case SHOW_KEYBOARD_OVERLAY:
-    case SHOW_SYSTEM_TRAY_BUBBLE:
-    case SHOW_TASK_MANAGER:
-    case TAKE_WINDOW_SCREENSHOT:
-    case TAKE_PARTIAL_SCREENSHOT:
-    case TAKE_SCREENSHOT:
     case TOGGLE_FULLSCREEN:
     case TOGGLE_MAXIMIZED:
     case TOGGLE_OVERVIEW:
@@ -1047,21 +618,11 @@ bool AcceleratorController::CanPerformAction(
 #if defined(OS_CHROMEOS)
     case BRIGHTNESS_DOWN:
     case BRIGHTNESS_UP:
-    case DISABLE_GPU_WATCHDOG:
     case KEYBOARD_BRIGHTNESS_DOWN:
     case KEYBOARD_BRIGHTNESS_UP:
-    case LOCK_PRESSED:
-    case LOCK_RELEASED:
-    case OPEN_CROSH:
-    case OPEN_FILE_MANAGER:
-    case OPEN_GET_HELP:
-    case POWER_PRESSED:
-    case POWER_RELEASED:
     case SUSPEND:
-    case TOGGLE_MIRROR_MODE:
     case TOGGLE_SPOKEN_FEEDBACK:
     case TOGGLE_WIFI:
-    case TOUCH_HUD_PROJECTION_TOGGLE:
     case VOLUME_DOWN:
     case VOLUME_MUTE:
     case VOLUME_UP:
@@ -1069,8 +630,14 @@ bool AcceleratorController::CanPerformAction(
     case DUMMY_FOR_RESERVED:
 #endif
       return true;
+
+    default:
+      // Default switch is temporary until mash transition complete. Needed as
+      // some actions don't yet work with mash.
+      break;
   }
-  return false;
+  DCHECK(delegate_ && delegate_->HandlesAction(action));
+  return delegate_->CanPerformAction(action, accelerator, previous_accelerator);
 }
 
 void AcceleratorController::PerformAction(AcceleratorAction action,
@@ -1081,8 +648,8 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     return;
 
   // If your accelerator invokes more than one line of code, please either
-  // implement it in your module's controller code (like TOGGLE_MIRROR_MODE
-  // below) or pull it into a HandleFoo() function above.
+  // implement it in your module's controller code or pull it into a HandleFoo()
+  // function above.
   switch (action) {
     case CYCLE_BACKWARD_MRU:
       HandleCycleBackwardMRU(accelerator);
@@ -1111,42 +678,6 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     case FOCUS_PREVIOUS_PANE:
       HandleRotatePaneFocus(FocusCycler::BACKWARD);
       break;
-    case FOCUS_SHELF:
-      HandleFocusShelf();
-      break;
-    case LAUNCH_APP_0:
-      HandleLaunchAppN(0);
-      break;
-    case LAUNCH_APP_1:
-      HandleLaunchAppN(1);
-      break;
-    case LAUNCH_APP_2:
-      HandleLaunchAppN(2);
-      break;
-    case LAUNCH_APP_3:
-      HandleLaunchAppN(3);
-      break;
-    case LAUNCH_APP_4:
-      HandleLaunchAppN(4);
-      break;
-    case LAUNCH_APP_5:
-      HandleLaunchAppN(5);
-      break;
-    case LAUNCH_APP_6:
-      HandleLaunchAppN(6);
-      break;
-    case LAUNCH_APP_7:
-      HandleLaunchAppN(7);
-      break;
-    case LAUNCH_LAST_APP:
-      HandleLaunchLastApp();
-      break;
-    case MAGNIFY_SCREEN_ZOOM_IN:
-      HandleMagnifyScreen(1);
-      break;
-    case MAGNIFY_SCREEN_ZOOM_OUT:
-      HandleMagnifyScreen(-1);
-      break;
     case MEDIA_NEXT_TRACK:
       HandleMediaNextTrack();
       break;
@@ -1156,72 +687,18 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     case MEDIA_PREV_TRACK:
       HandleMediaPrevTrack();
       break;
-    case NEW_INCOGNITO_WINDOW:
-      HandleNewIncognitoWindow();
-      break;
-    case NEW_TAB:
-      HandleNewTab(accelerator);
-      break;
-    case NEW_WINDOW:
-      HandleNewWindow();
-      break;
     case NEXT_IME:
       HandleNextIme(ime_control_delegate_.get());
       break;
-    case OPEN_FEEDBACK_PAGE:
-      HandleOpenFeedbackPage();
-      break;
     case PREVIOUS_IME:
       HandlePreviousIme(ime_control_delegate_.get(), accelerator);
       break;
     case PRINT_UI_HIERARCHIES:
       debug::PrintUIHierarchies();
       break;
-    case RESTORE_TAB:
-      HandleRestoreTab();
-      break;
-    case ROTATE_SCREEN:
-      HandleRotateScreen();
-      break;
-    case ROTATE_WINDOW:
-      HandleRotateActiveWindow();
-      break;
-    case SCALE_UI_DOWN:
-      accelerators::ZoomInternalDisplay(false /* down */);
-      break;
-    case SCALE_UI_RESET:
-      accelerators::ResetInternalDisplayZoom();
-      break;
-    case SCALE_UI_UP:
-      accelerators::ZoomInternalDisplay(true /* up */);
-      break;
-    case SHOW_KEYBOARD_OVERLAY:
-      HandleShowKeyboardOverlay();
-      break;
-    case SHOW_MESSAGE_CENTER_BUBBLE:
-      HandleShowMessageCenterBubble();
-      break;
-    case SHOW_SYSTEM_TRAY_BUBBLE:
-      HandleShowSystemTrayBubble();
-      break;
-    case SHOW_TASK_MANAGER:
-      HandleShowTaskManager();
-      break;
     case SWITCH_IME:
       HandleSwitchIme(ime_control_delegate_.get(), accelerator);
       break;
-    case TAKE_WINDOW_SCREENSHOT:
-      HandleTakeWindowScreenshot(screenshot_delegate_.get());
-      break;
-    case TAKE_PARTIAL_SCREENSHOT:
-      HandleTakePartialScreenshot(screenshot_delegate_.get());
-      break;
-    case TAKE_SCREENSHOT:
-      HandleTakeScreenshot(screenshot_delegate_.get());
-      break;
-    case TOGGLE_APP_LIST:
-      HandleToggleAppList(accelerator);
-      break;
     case TOGGLE_FULLSCREEN:
       HandleToggleFullscreen(accelerator);
       break;
@@ -1241,9 +718,6 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     case WINDOW_POSITION_CENTER:
       HandlePositionCenter();
       break;
-    case UNPIN:
-      HandleUnpin();
-      break;
 #if defined(OS_CHROMEOS)
     case BRIGHTNESS_DOWN: {
       BrightnessControlDelegate* delegate =
@@ -1270,9 +744,6 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     case DISABLE_CAPS_LOCK:
       HandleDisableCapsLock();
       break;
-    case DISABLE_GPU_WATCHDOG:
-      Shell::GetInstance()->gpu_support()->DisableGpuWatchdog();
-      break;
     case KEYBOARD_BRIGHTNESS_DOWN: {
       KeyboardBrightnessControlDelegate* delegate =
           WmShell::Get()->keyboard_brightness_control_delegate();
@@ -1287,42 +758,12 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
         delegate->HandleKeyboardBrightnessUp(accelerator);
       break;
     }
-    case LOCK_PRESSED:
-    case LOCK_RELEASED:
-      Shell::GetInstance()->power_button_controller()->OnLockButtonEvent(
-          action == LOCK_PRESSED, base::TimeTicks());
-      break;
     case LOCK_SCREEN:
       HandleLock();
       break;
-    case OPEN_CROSH:
-      HandleCrosh();
-      break;
-    case OPEN_FILE_MANAGER:
-      HandleFileManager();
-      break;
-    case OPEN_GET_HELP:
-      HandleGetHelp();
-      break;
-    case POWER_PRESSED:  // fallthrough
-    case POWER_RELEASED:
-      if (!base::SysInfo::IsRunningOnChromeOS()) {
-        // There is no powerd, the Chrome OS power manager, in linux desktop,
-        // so call the PowerButtonController here.
-        Shell::GetInstance()->power_button_controller()->OnPowerButtonEvent(
-            action == POWER_PRESSED, base::TimeTicks());
-      }
-      // We don't do anything with these at present on the device,
-      // (power button events are reported to us from powerm via
-      // D-BUS), but we consume them to prevent them from getting
-      // passed to apps -- see http://crbug.com/146609.
-      break;
     case SUSPEND:
       HandleSuspend();
       break;
-    case SWAP_PRIMARY_DISPLAY:
-      HandleSwapPrimaryDisplay();
-      break;
     case SWITCH_TO_NEXT_USER:
       HandleCycleUser(SessionStateDelegate::CYCLE_TO_NEXT_USER);
       break;
@@ -1332,24 +773,12 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
     case TOGGLE_CAPS_LOCK:
       HandleToggleCapsLock();
       break;
-    case TOGGLE_MIRROR_MODE:
-      HandleToggleMirrorMode();
-      break;
     case TOGGLE_SPOKEN_FEEDBACK:
       HandleToggleSpokenFeedback();
       break;
     case TOGGLE_WIFI:
       WmShell::Get()->system_tray_notifier()->NotifyRequestToggleWifi();
       break;
-    case TOUCH_HUD_CLEAR:
-      HandleTouchHudClear();
-      break;
-    case TOUCH_HUD_MODE_CHANGE:
-      HandleTouchHudModeChange();
-      break;
-    case TOUCH_HUD_PROJECTION_TOGGLE:
-      accelerators::ToggleTouchHudProjection();
-      break;
     case VOLUME_DOWN:
       HandleVolumeDown(accelerator);
       break;
@@ -1364,6 +793,12 @@ void AcceleratorController::PerformAction(AcceleratorAction action,
       NOTREACHED();
       break;
 #endif
+    default:
+      // Temporary until mash transition complete. Needed as some actions
+      // don't yet work with mash.
+      DCHECK(delegate_ && delegate_->HandlesAction(action));
+      delegate_->PerformAction(action, accelerator);
+      break;
   }
 }