Add facitility for Global Keyboard shortcuts.

chrome/browser/global_keyboard_shortcuts_mac.h

Index: chrome/browser/global_keyboard_shortcuts_mac.h
diff --git a/chrome/browser/global_keyboard_shortcuts_mac.h b/chrome/browser/global_keyboard_shortcuts_mac.h
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+++ b/chrome/browser/global_keyboard_shortcuts_mac.h
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+// Copyright (c) 2009 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.
+
+#ifndef CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_
+#define CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_
+
+#include "base/basictypes.h";
+
+struct KeyboardShortcutData {
+  bool command_key;
+  bool shift_key;
+  bool cntrl_key;
+  int vkey_code;  // Virtual Key code for the command.
+  int chrome_command;  // The chrome command # to execute for this shortcut.
+};
+
+// Check if a given keycode + modifiers correspond to a given Chrome command.
+// returns: Command number (as passed to Browser::ExecuteCommand) or -1 if there
+// was no match.
+int CommandForKeyboardShortcut(bool command_key, bool shift_key, bool cntrl_key,
+    int vkey_code);
+
+// For testing purposes.
+const KeyboardShortcutData* GetKeyboardShortCutTable(size_t* num_entries);
+
+#endif  // #ifndef CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_