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

chrome/browser/about_flags.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/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 925 matching lines @@
     kOsCrOS,
     SINGLE_VALUE_TYPE(ash::switches::kAshNewLockAnimationsEnabled),
   },
   {
     "file-manager-packaged",
     IDS_FLAGS_FILE_MANAGER_PACKAGED_NAME,
     IDS_FLAGS_FILE_MANAGER_PACKAGED_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kFileManagerPackaged),
   },
+  {
+    "enable-chromebook-function-key",
+    IDS_FLAGS_ENABLE_CHROMEBOOK_FUNCTION_KEY_NAME,
+    IDS_FLAGS_ENABLE_CHROMEBOOK_FUNCTION_KEY_DESCRIPTION,
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(switches::kEnableChromebookFunctionKey),
+  },
 #endif
   {
     "enable-views-textfield",
     IDS_FLAGS_ENABLE_VIEWS_TEXTFIELD_NAME,
     IDS_FLAGS_ENABLE_VIEWS_TEXTFIELD_DESCRIPTION,
     kOsWin,
     SINGLE_VALUE_TYPE(switches::kEnableViewsTextfield),
   },
   {
     "old-checkbox-style",
@@ skipping 614 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags