Implement "pinned" mode in ash.

ash/accelerators/accelerator_table.cc

 // Copyright (c) 2012 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_table.h"
 
 #include "ash/strings/grit/ash_strings.h"
 #include "base/macros.h"
 
 namespace ash {
@@ skipping 446 matching lines @@
     DEBUG_TOGGLE_TOUCH_PAD,
     DEBUG_TOGGLE_TOUCH_SCREEN,
     LOCK_SCREEN,
     SUSPEND,
 #endif
 };
 
 const size_t kNonrepeatableActionsLength =
     arraysize(kNonrepeatableActions);
 
-const AcceleratorAction kActionsAllowedInAppMode[] = {
+const AcceleratorAction kActionsAllowedInAppModeOrPinnedMode[] = {
   DEBUG_PRINT_LAYER_HIERARCHY,
   DEBUG_PRINT_VIEW_HIERARCHY,
   DEBUG_PRINT_WINDOW_HIERARCHY,
   MAGNIFY_SCREEN_ZOOM_IN,  // Control+F7
   MAGNIFY_SCREEN_ZOOM_OUT,  // Control+F6
   MEDIA_NEXT_TRACK,
   MEDIA_PLAY_PAUSE,
   MEDIA_PREV_TRACK,
   NEXT_IME,
   PREVIOUS_IME,
@@ skipping 20 matching lines @@
   TOGGLE_MIRROR_MODE,
   TOGGLE_SPOKEN_FEEDBACK,
   TOGGLE_WIFI,
   TOUCH_HUD_CLEAR,
   VOLUME_DOWN,
   VOLUME_MUTE,
   VOLUME_UP,
 #endif  // defined(OS_CHROMEOS)
 };
 
-const size_t kActionsAllowedInAppModeLength =
-    arraysize(kActionsAllowedInAppMode);
+const size_t kActionsAllowedInAppModeOrPinnedModeLength =
+    arraysize(kActionsAllowedInAppModeOrPinnedMode);
+
+const AcceleratorAction kActionsAllowedInPinnedMode[] = {
+    TAKE_WINDOW_SCREENSHOT,
+    TAKE_PARTIAL_SCREENSHOT,
+    TAKE_SCREENSHOT,
+#if defined(OS_CHROMEOS)
+    LOCK_SCREEN,
+    SUSPEND,
+#endif
+};
+
+const size_t kActionsAllowedInPinnedModeLength =
+    arraysize(kActionsAllowedInPinnedMode);
 
 const AcceleratorAction kActionsNeedingWindow[] = {
     CYCLE_BACKWARD_MRU,
     CYCLE_FORWARD_MRU,
     TOGGLE_OVERVIEW,
     WINDOW_CYCLE_SNAP_DOCK_LEFT,
     WINDOW_CYCLE_SNAP_DOCK_RIGHT,
     WINDOW_MINIMIZE,
     TOGGLE_FULLSCREEN,
     TOGGLE_MAXIMIZED,
@@ skipping 27 matching lines @@
     TOGGLE_WIFI,
     VOLUME_DOWN,
     VOLUME_MUTE,
     VOLUME_UP,
 #endif  // defined(OS_CHROMEOS)
 };
 
 const size_t kActionsKeepingMenuOpenLength = arraysize(kActionsKeepingMenuOpen);
 
 }  // namespace ash