Lands fix for 6878 from Yong Shin.

chrome/views/button_dropdown.cc

 // Copyright (c) 2006-2008 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/views/button_dropdown.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/back_forward_menu_model.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/views/view_menu_delegate.h"
@@ skipping 114 matching lines @@
     gfx::Point menu_position(lb.origin());
     menu_position.Offset(0, lb.height() - 1);
     if (UILayoutIsRightToLeft())
       menu_position.Offset(lb.width() - 1, 0);
 
     Menu::AnchorPoint anchor = Menu::TOPLEFT;
     if (UILayoutIsRightToLeft())
       anchor = Menu::TOPRIGHT;
 
     View::ConvertPointToScreen(this, &menu_position);
+
+    int left_bound = GetSystemMetrics(SM_XVIRTUALSCREEN);
+    if (menu_position.x() < left_bound)
+      menu_position.set_x(left_bound);
+
     Menu menu(menu_delegate_, anchor, window);
 
     // ID's for AppendMenu is 1-based because RunMenu will ignore the user
     // selection if id=0 is selected (0 = NO-OP) so we add 1 here and subtract 1
     // in the handlers above to get the actual index
     int item_count = menu_delegate_->GetItemCount();
     for (int i = 0; i < item_count; i++) {
       if (menu_delegate_->IsItemSeparator(i + 1)) {
         menu.AppendSeparator();
       } else {
@@ skipping 35 matching lines @@
 }
 
 bool ButtonDropDown::GetAccessibleState(VARIANT* state) {
   DCHECK(state);
 
   state->lVal |= STATE_SYSTEM_HASPOPUP;
   return true;
 }
 
 }  // namespace views
-