[MD] Fix bookmark bar painting bugs.

chrome/browser/ui/views/bookmarks/bookmark_bar_view.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/bookmarks/bookmark_bar_view.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 601 matching lines @@
       throbbing_view_(NULL),
       bookmark_bar_state_(BookmarkBar::SHOW),
       animating_detached_(false),
       show_folder_method_factory_(this) {
   set_id(VIEW_ID_BOOKMARK_BAR);
   Init();
 
   if (ui::MaterialDesignController::IsModeMaterial()) {
     // Don't let the bookmarks show on top of the location bar while animating.
     SetPaintToLayer(true);
-    layer()->SetFillsBoundsOpaquely(false);
     layer()->SetMasksToBounds(true);
   }
 
   size_animation_.Reset(1);
 }
 
 BookmarkBarView::~BookmarkBarView() {
   if (model_)
     model_->RemoveObserver(this);
 
@@ skipping 1472 matching lines @@
       views::Button::STATE_NORMAL,
       chrome::GetBookmarkSupervisedFolderIcon(color));
   if (apps_page_shortcut_->visible())
     apps_page_shortcut_->SetEnabledTextColors(color);
 
   overflow_button_->SetImage(
       views::Button::STATE_NORMAL,
       gfx::CreateVectorIcon(gfx::VectorIconId::OVERFLOW_CHEVRON, 8,
                             theme_provider->GetColor(
                                 ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON)));
+
+  // Redraw the background.
+  SchedulePaint();
 }
 
 bool BookmarkBarView::UpdateOtherAndManagedButtonsVisibility() {
   bool has_other_children = !model_->other_node()->empty();
   bool update_other = has_other_children != other_bookmarks_button_->visible();
   if (update_other) {
     other_bookmarks_button_->SetVisible(has_other_children);
     UpdateBookmarksSeparatorVisibility();
   }
 
@@ skipping 30 matching lines @@
     return;
   apps_page_shortcut_->SetVisible(visible);
   UpdateBookmarksSeparatorVisibility();
   LayoutAndPaint();
 }
 
 void BookmarkBarView::OnShowManagedBookmarksPrefChanged() {
   if (UpdateOtherAndManagedButtonsVisibility())
     LayoutAndPaint();
 }