Clean up unused constant globals

chrome/browser/ui/gtk/location_bar_view_gtk.cc

 // Copyright 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/gtk/location_bar_view_gtk.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 136 matching lines @@
 const int kContentSettingImageDisplayTime = 3200;
 // The time, in ms, of the animation (open and close).
 const int kContentSettingImageAnimationTime = 150;
 
 // Color of border of content setting area (icon/label).
 const GdkColor kContentSettingBorderColor = GDK_COLOR_RGB(0xe9, 0xb9, 0x66);
 // Colors for the background gradient.
 const GdkColor kContentSettingTopColor = GDK_COLOR_RGB(0xff, 0xf8, 0xd4);
 const GdkColor kContentSettingBottomColor = GDK_COLOR_RGB(0xff, 0xe6, 0xaf);
 
-// Styling for gray button.
-const GdkColor kGrayBorderColor = GDK_COLOR_RGB(0xa0, 0xa0, 0xa0);
-const GdkColor kTopColorGray = GDK_COLOR_RGB(0xe5, 0xe5, 0xe5);
-const GdkColor kBottomColorGray = GDK_COLOR_RGB(0xd0, 0xd0, 0xd0);
-
 inline int InnerPadding() {
   return extensions::FeatureSwitch::script_badges()->IsEnabled() ?
       kScriptBadgeInnerPadding : kInnerPadding;
 }
 
 // If widget is visible, increment the int pointed to by count.
 // Suitible for use with gtk_container_foreach.
 void CountVisibleWidgets(GtkWidget* widget, gpointer count) {
   if (gtk_widget_get_visible(widget))
     *static_cast<int*>(count) += 1;
@@ skipping 1997 matching lines @@
 
   GdkEventButton event = {};
   event.type = GDK_BUTTON_PRESS;
   event.button = 1;
   return view->OnButtonPressed(view->widget(), &event);
 }
 
 void LocationBarViewGtk::PageActionViewGtk::OnIconChanged() {
   UpdateVisibility(owner_->GetWebContents(), current_url_);
 }