Add power-user keyboard mode for ChromeOS with Search key acting as a typical Fn key.

chrome/common/pref_names.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 "chrome/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
@@ skipping 695 matching lines @@
     // Note: we no longer use XKB for remapping these keys, but we can't change
     // the pref names since the names are already synced with the cloud.
     "settings.language.xkb_remap_search_key_to";
 const char kLanguageRemapControlKeyTo[] =
     "settings.language.xkb_remap_control_key_to";
 const char kLanguageRemapAltKeyTo[] =
     "settings.language.xkb_remap_alt_key_to";
 const char kLanguageRemapCapsLockKeyTo[] =
     "settings.language.remap_caps_lock_key_to";
 
+// A boolean pref which determines whether the Search key should act like a
+// Function key when held down.
+const char kLanguageSearchKeyActsAsFunctionKey[] =
+    "settings.language.search_key_acts_as_function_key";
+
 // A boolean pref which determines whether key repeat is enabled.
 const char kLanguageXkbAutoRepeatEnabled[] =
     "settings.language.xkb_auto_repeat_enabled_r2";
 // A integer pref which determines key repeat delay (in ms).
 const char kLanguageXkbAutoRepeatDelay[] =
     "settings.language.xkb_auto_repeat_delay_r2";
 // A integer pref which determines key repeat interval (in ms).
 const char kLanguageXkbAutoRepeatInterval[] =
     "settings.language.xkb_auto_repeat_interval_r2";
 // "_r2" suffixes are added to the three prefs above when we change the
@@ skipping 1407 matching lines @@
 // Tracks the time of the last shown warning. Used to reset
 // |network_profile.warnings_left| after a silence period.
 const char kNetworkProfileLastWarningTime[] =
     "network_profile.last_warning_time";
 
 // 64-bit serialization of the time last policy usage statistics were collected
 // by UMA_HISTOGRAM_ENUMERATION.
 const char kLastPolicyStatisticsUpdate[] = "policy.last_statistics_update";
 
 }  // namespace prefs