Clean up unused constant globals

chrome/browser/ui/gtk/tabs/tab_renderer_gtk.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/gtk/tabs/tab_renderer_gtk.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/debug/trace_event.h"
@@ skipping 34 matching lines @@
 
 using content::WebContents;
 
 namespace {
 
 const int kFontPixelSize = 12;
 const int kLeftPadding = 16;
 const int kTopPadding = 6;
 const int kRightPadding = 15;
 const int kBottomPadding = 5;
-const int kDropShadowHeight = 2;
 const int kFaviconTitleSpacing = 4;
 const int kTitleCloseButtonSpacing = 5;
 const int kStandardTitleWidth = 175;
 const int kDropShadowOffset = 2;
 const int kInactiveTabBackgroundOffsetY = 15;
 
 // When a non-mini-tab becomes a mini-tab the width of the tab animates. If
 // the width of a mini-tab is >= kMiniTabRendererAsNormalTabWidth then the tab
 // is rendered as a normal tab. This is done to avoid having the title
 // immediately disappear when transitioning a tab from normal to mini-tab.
@@ skipping 1180 matching lines @@
   GdkPixbuf* tab_close = rb.GetNativeImageNamed(IDR_CLOSE_1).ToGdkPixbuf();
   close_button_width_ = gdk_pixbuf_get_width(tab_close);
   close_button_height_ = gdk_pixbuf_get_height(tab_close);
 
   const gfx::Font& base_font = rb.GetFont(ui::ResourceBundle::BaseFont);
   title_font_ = new gfx::Font(base_font.GetFontName(), kFontPixelSize);
   title_font_height_ = title_font_->GetHeight();
 
   initialized_ = true;
 }