Linux Aura: get tooltip background color from theme

ui/views/corewm/tooltip_aura.cc

 // Copyright 2013 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/views/corewm/tooltip_aura.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_split.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/text_elider.h"
 #include "ui/gfx/text_utils.h"
+#include "ui/native_theme/native_theme.h"
 #include "ui/views/background.h"
 #include "ui/views/border.h"
 #include "ui/views/widget/widget.h"
 
 namespace {
 
-const SkColor kTooltipBackground = 0xFFFFFFCC;
 const int kTooltipHorizontalPadding = 3;
 
 // Max visual tooltip width. If a tooltip is greater than this width, it will
 // be wrapped.
 const int kTooltipMaxWidthPixels = 400;
 
 const size_t kMaxLines = 10;
 
 // TODO(derat): This padding is needed on Chrome OS devices but seems excessive
 // when running the same binary on a Linux workstation; presumably there's a
@@ skipping 21 matching lines @@
 
 }  // namespace
 
 namespace views {
 namespace corewm {
 
 TooltipAura::TooltipAura(gfx::ScreenType screen_type)
     : screen_type_(screen_type),
       widget_(NULL),
       tooltip_window_(NULL) {
-  label_.set_background(
-      views::Background::CreateSolidBackground(kTooltipBackground));
   label_.set_owned_by_client();
   label_.SetMultiLine(true);
 }
 
 TooltipAura::~TooltipAura() {
   DestroyWidget();
 }
 
 // static
 void TooltipAura::TrimTooltipToFit(const gfx::FontList& font_list,
@@ skipping 152 matching lines @@
   base::string16 trimmed_text(tooltip_text);
   TrimTooltipToFit(label_.font_list(), GetMaxWidth(location), &trimmed_text,
                    &max_width, &line_count);
   label_.SetText(trimmed_text);
 
   int width = max_width + 2 * kTooltipHorizontalPadding;
   int height = label_.GetHeightForWidth(max_width) +
       2 * kTooltipVerticalPadding;
   CreateWidget();
   SetTooltipBounds(location, width, height);
+
+  label_.set_background(
+      views::Background::CreateSolidBackground(
+          widget_->GetNativeTheme()->GetSystemColor(
+              ui::NativeTheme::kColorId_TooltipBackground)));
 }
 
 void TooltipAura::Show() {
   if (widget_)
     widget_->Show();
 }
 
 void TooltipAura::Hide() {
   tooltip_window_ = NULL;
   if (widget_)
     widget_->Hide();
 }
 
 bool TooltipAura::IsVisible() {
   return widget_ && widget_->IsVisible();
 }
 
 void TooltipAura::OnWidgetDestroying(views::Widget* widget) {
   DCHECK_EQ(widget_, widget);
   widget_ = NULL;
   tooltip_window_ = NULL;
 }
 
 }  // namespace corewm
 }  // namespace views