Adjust BrowserActionsContainer drag and drop to work for overflow

chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc

 // Copyright 2014 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/toolbar/extension_toolbar_menu_view.h"
 
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/toolbar/browser_actions_container.h"
 #include "chrome/browser/ui/views/toolbar/toolbar_view.h"
 #include "chrome/browser/ui/views/toolbar/wrench_menu.h"
 #include "ui/views/controls/menu/menu_item_view.h"
 
-namespace {
-
-// Bottom padding to make sure we have enough room for the icons.
-// TODO(devlin): Figure out why the bottom few pixels of the last row in the
-// overflow menu are cut off (so we can remove this).
-const int kVerticalPadding = 8;
-
-}  // namespace
-
 ExtensionToolbarMenuView::ExtensionToolbarMenuView(Browser* browser,
                                                    WrenchMenu* wrench_menu)
     : browser_(browser),
       wrench_menu_(wrench_menu),
       container_(NULL),
       browser_actions_container_observer_(this) {
   BrowserActionsContainer* main =
       BrowserView::GetBrowserViewForBrowser(browser_)
           ->toolbar()->browser_actions();
   container_ = new BrowserActionsContainer(
       browser_,
       NULL,  // No owner view, means no extra keybindings are registered.
       main);
   container_->Init();
   AddChildView(container_);
 
   // If we were opened for a drop command, we have to wait for the drop to
   // finish so we can close the wrench menu.
   if (wrench_menu_->for_drop()) {
     browser_actions_container_observer_.Add(container_);
     browser_actions_container_observer_.Add(main);
   }
 }
 
 ExtensionToolbarMenuView::~ExtensionToolbarMenuView() {
 }
 
 gfx::Size ExtensionToolbarMenuView::GetPreferredSize() const {
-  gfx::Size sz = container_->GetPreferredSize();
-  if (sz.height() == 0)
-    return sz;
-
-  sz.Enlarge(0, kVerticalPadding);
-  return sz;
+  return container_->GetPreferredSize();
 }
 
 void ExtensionToolbarMenuView::Layout() {
   // All buttons are given the same width.
-  gfx::Size sz = container_->GetPreferredSize();
-  int height = sz.height() + kVerticalPadding / 2;
-  SetBounds(views::MenuItemView::label_start(), 0, sz.width(), height);
-  container_->SetBounds(0, 0, sz.width(), height);
+  gfx::Size sz = GetPreferredSize();
+  SetBounds(views::MenuItemView::label_start(), 0, sz.width(), sz.height());
+  container_->SetBounds(0, 0, sz.width(), sz.height());
 }
 
 void ExtensionToolbarMenuView::OnBrowserActionDragDone() {
   DCHECK(wrench_menu_->for_drop());
   wrench_menu_->CloseMenu();
 }