Remove the backspace/shift+backspace navigating the page.

chrome/browser/ui/views/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 "chrome/browser/ui/views/accelerator_table.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 17 matching lines @@
 #else
 const ui::EventFlags kPlatformModifier = ui::EF_CONTROL_DOWN;
 #endif
 
 // NOTE: Keep this list in the same (mostly-alphabetical) order as
 // the Windows accelerators in ../../app/chrome_dll.rc.
 // Do not use Ctrl-Alt as a shortcut modifier, as it is used by i18n keyboards:
 // http://blogs.msdn.com/b/oldnewthing/archive/2004/03/29/101121.aspx
 const AcceleratorMapping kAcceleratorMap[] = {
   { ui::VKEY_LEFT, ui::EF_ALT_DOWN, IDC_BACK },
-  { ui::VKEY_BACK, ui::EF_NONE, IDC_BACK },
   { ui::VKEY_D, ui::EF_CONTROL_DOWN, IDC_BOOKMARK_PAGE },
   { ui::VKEY_D, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
     IDC_BOOKMARK_ALL_TABS },
   { ui::VKEY_W, ui::EF_CONTROL_DOWN, IDC_CLOSE_TAB },
   { ui::VKEY_W, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, IDC_CLOSE_WINDOW },
   { ui::VKEY_F, ui::EF_CONTROL_DOWN, IDC_FIND },
   { ui::VKEY_G, ui::EF_CONTROL_DOWN, IDC_FIND_NEXT },
   { ui::VKEY_G, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, IDC_FIND_PREVIOUS },
   { ui::VKEY_D, ui::EF_ALT_DOWN, IDC_FOCUS_LOCATION },
   { ui::VKEY_L, ui::EF_CONTROL_DOWN, IDC_FOCUS_LOCATION },
   { ui::VKEY_K, ui::EF_CONTROL_DOWN, IDC_FOCUS_SEARCH },
   { ui::VKEY_E, ui::EF_CONTROL_DOWN, IDC_FOCUS_SEARCH },
   { ui::VKEY_T, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, IDC_FOCUS_TOOLBAR },
   { ui::VKEY_B, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, IDC_FOCUS_BOOKMARKS },
   { ui::VKEY_A, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, IDC_FOCUS_INFOBARS },
   { ui::VKEY_RIGHT, ui::EF_ALT_DOWN, IDC_FORWARD },
-  { ui::VKEY_BACK, ui::EF_SHIFT_DOWN, IDC_FORWARD },
   { ui::VKEY_I, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, IDC_DEV_TOOLS },
   { ui::VKEY_F12, ui::EF_NONE, IDC_DEV_TOOLS_TOGGLE },
   { ui::VKEY_J, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
     IDC_DEV_TOOLS_CONSOLE },
   { ui::VKEY_C, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
     IDC_DEV_TOOLS_INSPECT },
   { ui::VKEY_O, ui::EF_CONTROL_DOWN, IDC_OPEN_FILE },
   { ui::VKEY_P, ui::EF_CONTROL_DOWN, IDC_PRINT},
 #if defined(ENABLE_BASIC_PRINTING)
   { ui::VKEY_P, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, IDC_BASIC_PRINT},
@@ skipping 196 matching lines @@
       *accelerator = ui::Accelerator(ui::VKEY_C, ui::EF_CONTROL_DOWN);
       return true;
     case IDC_PASTE:
       *accelerator = ui::Accelerator(ui::VKEY_V, ui::EF_CONTROL_DOWN);
       return true;
   }
   return false;
 }
 
 }  // namespace chrome