Automatically remap Command key on an Apple keyboard to Control [part 1 of 2 - Ash part]

ash/ash.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
   },
 
@@ skipping 65 matching lines @@
         'drag_drop/drag_drop_controller.cc',
         'drag_drop/drag_drop_controller.h',
         'drag_drop/drag_image_view.cc',
         'drag_drop/drag_image_view.h',
         'focus_cycler.cc',
         'focus_cycler.h',
         'ime/event.cc',
         'ime/event.h',
         'ime/input_method_event_filter.cc',
         'ime/input_method_event_filter.h',
+        'key_rewriter_delegate.h',
         'launcher/background_animator.cc',
         'launcher/background_animator.h',
         'launcher/launcher.cc',
         'launcher/launcher.h',
         'launcher/launcher_button.cc',
         'launcher/launcher_button.h',
         'launcher/launcher_delegate.h',
         'launcher/launcher_model.cc',
         'launcher/launcher_model.h',
         'launcher/launcher_model_observer.h',
@@ skipping 89 matching lines @@
         'wm/default_window_resizer.cc',
         'wm/default_window_resizer.h',
         'wm/dialog_frame_view.cc',
         'wm/dialog_frame_view.h',
         'wm/event_client_impl.cc',
         'wm/event_client_impl.h',
         'wm/frame_painter.cc',
         'wm/frame_painter.h',
         'wm/image_grid.cc',
         'wm/image_grid.h',
+        'wm/key_rewriter_event_filter.cc',
+        'wm/key_rewriter_event_filter.h',
         'wm/panel_frame_view.cc',
         'wm/panel_frame_view.h',
         'wm/panel_layout_manager.cc',
         'wm/panel_layout_manager.h',
         'wm/panel_window_event_filter.cc',
         'wm/panel_window_event_filter.h',
         'wm/partial_screenshot_event_filter.cc',
         'wm/partial_screenshot_event_filter.h',
         'wm/partial_screenshot_view.cc',
         'wm/partial_screenshot_view.h',
@@ skipping 265 matching lines @@
             'shell/cocoa/app-Info.plist',
           ],
           'xcode_settings': {
             'INFOPLIST_FILE': 'shell/cocoa/app-Info.plist',
           },
         }],
       ],
     },
   ],
 }