added CTRL+Click and SHIFT+Click handler for context menu, Back and Forward.

ui/base/models/simple_menu_model.cc

 // Copyright (c) 2011 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 "ui/base/models/simple_menu_model.h"
 
 #include "base/message_loop.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ skipping 31 matching lines @@
     int command_id, SkBitmap* bitmap) const {
   return false;
 }
 
 void SimpleMenuModel::Delegate::CommandIdHighlighted(int command_id) {
 }
 
 void SimpleMenuModel::Delegate::MenuClosed() {
 }
 
+void SimpleMenuModel::Delegate::ExecuteCommandWithDisposition(
+    int command_id, int disposition) {
+  ExecuteCommand(command_id);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // SimpleMenuModel, public:
 
 SimpleMenuModel::SimpleMenuModel(Delegate* delegate)
     : delegate_(delegate),
       menu_model_delegate_(NULL),
       ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)) {
 }
 
 SimpleMenuModel::~SimpleMenuModel() {
@@ skipping 218 matching lines @@
 void SimpleMenuModel::HighlightChangedTo(int index) {
   if (delegate_)
     delegate_->CommandIdHighlighted(GetCommandIdAt(index));
 }
 
 void SimpleMenuModel::ActivatedAt(int index) {
   if (delegate_)
     delegate_->ExecuteCommand(GetCommandIdAt(index));
 }
 
+void SimpleMenuModel::ActivatedAtWithDisposition(int index, int disposition) {
+  if (delegate_)
+    delegate_->ExecuteCommandWithDisposition(GetCommandIdAt(index),
+                                             disposition);
+}
+
 MenuModel* SimpleMenuModel::GetSubmenuModelAt(int index) const {
   return items_.at(FlipIndex(index)).submenu;
 }
 
 void SimpleMenuModel::MenuClosed() {
   // Due to how menus work on the different platforms, ActivatedAt will be
   // called after this.  It's more convenient for the delegate to be called
   // afterwards though, so post a task.
   MessageLoop::current()->PostTask(
       FROM_HERE,
@@ skipping 31 matching lines @@
 #ifndef NDEBUG
   if (item.type == TYPE_SEPARATOR) {
     DCHECK_EQ(item.command_id, kSeparatorId);
   } else {
     DCHECK_GE(item.command_id, 0);
   }
 #endif  // NDEBUG
 }
 
 }  // namespace ui