Add key based scrolling on magnified screen for kiosk mode.

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 "base/basictypes.h"
 
 namespace ash {
 
@@ skipping 415 matching lines @@
     WINDOW_SNAP_RIGHT,
     WINDOW_MINIMIZE,
     TOGGLE_FULLSCREEN,
     TOGGLE_MAXIMIZED,
     WINDOW_POSITION_CENTER,
     ROTATE_WINDOW,
 };
 
 const size_t kActionsNeedingWindowLength = arraysize(kActionsNeedingWindow);
 
+#if defined(OS_CHROMEOS)
+// We're using NUMPAD keys as they're most likely unused in kiosk mode.
+const AcceleratorData kMagnifierAcceleratorData[] = {
+  { true, ui::VKEY_NUMPAD6, ui::EF_SHIFT_DOWN, MAGNIFY_SCREEN_UP },
+  { true, ui::VKEY_NUMPAD7, ui::EF_SHIFT_DOWN, MAGNIFY_SCREEN_DOWN },
+  { true, ui::VKEY_NUMPAD8, ui::EF_SHIFT_DOWN, MAGNIFY_SCREEN_LEFT },
+  { true, ui::VKEY_NUMPAD9, ui::EF_SHIFT_DOWN, MAGNIFY_SCREEN_RIGHT },
+
+  { false, ui::VKEY_NUMPAD6, ui::EF_NONE, MAGNIFY_SCREEN_STOP_SCROLL },
+  { false, ui::VKEY_NUMPAD7, ui::EF_NONE, MAGNIFY_SCREEN_STOP_SCROLL },
+  { false, ui::VKEY_NUMPAD8, ui::EF_NONE, MAGNIFY_SCREEN_STOP_SCROLL },
+  { false, ui::VKEY_NUMPAD9, ui::EF_NONE, MAGNIFY_SCREEN_STOP_SCROLL },
+};
+
+const size_t kMagnifierAcceleratorDataLength =
+    arraysize(kMagnifierAcceleratorData);
+#endif
+
 }  // namespace ash