linux and chromeos: Turn on -Wunused-const-variable.

ui/message_center/views/message_center_view.cc

 // Copyright (c) 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/message_center/views/message_center_view.h"
 
 #include <list>
 #include <map>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 22 matching lines @@
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/scroll_view.h"
 #include "ui/views/controls/scrollbar/overlay_scroll_bar.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/widget/widget.h"
 
 namespace message_center {
 
 namespace {
 
-const SkColor kBorderDarkColor = SkColorSetRGB(0xaa, 0xaa, 0xaa);
-const SkColor kButtonTextHighlightColor = SkColorSetRGB(0x2a, 0x2a, 0x2a);
-const SkColor kButtonTextHoverColor = SkColorSetRGB(0x2a, 0x2a, 0x2a);
 const SkColor kNoNotificationsTextColor = SkColorSetRGB(0xb4, 0xb4, 0xb4);
+#if defined(OS_LINUX) && defined(OS_CHROMEOS)
 const SkColor kTransparentColor = SkColorSetARGB(0, 0, 0, 0);
+#endif
 const int kAnimateClearingNextNotificationDelayMS = 40;
-const int kButtonBarBorderThickness = 1;
 const int kMinScrollViewHeight = 100;
 
-static const int kDefaultAnimationDurationMs = 120;
-static const int kDefaultFrameRateHz = 60;
+const int kDefaultAnimationDurationMs = 120;
+const int kDefaultFrameRateHz = 60;
 
 }  // namespace
 
 // BoundedScrollView ///////////////////////////////////////////////////////////
 
 // A custom scroll view whose height has a minimum and maximum value and whose
 // scroll bar disappears when not needed.
 class BoundedScrollView : public views::ScrollView {
  public:
   BoundedScrollView(int min_height, int max_height);
@@ skipping 935 matching lines @@
   scroller_->InvalidateLayout();
   PreferredSizeChanged();
   Layout();
 }
 
 void MessageCenterView::SetNotificationViewForTest(views::View* view) {
   message_list_view_->AddNotificationAt(view, 0);
 }
 
 }  // namespace message_center