Adding a menu item to take a screenshot under "More Tools" submenu in the Wrench menu.

chrome/browser/ui/toolbar/wrench_menu_model.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/ui/toolbar/wrench_menu_model.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/command_line.h"
@@ skipping 196 matching lines @@
     AddSeparator(ui::NORMAL_SEPARATOR);
   }
 
   AddItemWithStringId(IDC_MANAGE_EXTENSIONS, IDS_SHOW_EXTENSIONS);
 
   if (chrome::CanOpenTaskManager())
     AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
 
   AddItemWithStringId(IDC_CLEAR_BROWSING_DATA, IDS_CLEAR_BROWSING_DATA);
 
+#if defined(OS_CHROMEOS)
+  AddItemWithStringId(IDC_TAKE_SCREENSHOT, IDS_TAKE_SCREENSHOT);
+#endif
+
   AddSeparator(ui::NORMAL_SEPARATOR);
 
 #if defined(GOOGLE_CHROME_BUILD)
 #if !defined(OS_CHROMEOS)
   // Show IDC_FEEDBACK in "Tools" menu for non-ChromeOS platforms.
   AddItemWithStringId(IDC_FEEDBACK, IDS_FEEDBACK);
   AddSeparator(ui::NORMAL_SEPARATOR);
 #endif
 #endif // GOOGLE_CHROME_BUILD
 
@@ skipping 556 matching lines @@
             &enable_increment, &enable_decrement);
   }
   zoom_label_ = l10n_util::GetStringFUTF16(
       IDS_ZOOM_PERCENT, base::IntToString16(zoom_percent));
 }
 
 void WrenchMenuModel::OnZoomLevelChanged(
     const content::HostZoomMap::ZoomLevelChange& change) {
   UpdateZoomControls();
 }