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

chrome/browser/ui/views/download/download_item_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/download/download_item_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 33 matching lines @@
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/widget/root_view.h"
 #include "ui/views/widget/widget.h"
 
 // TODO(paulg): These may need to be adjusted when download progress
 //              animation is added, and also possibly to take into account
 //              different screen resolutions.
 static const int kTextWidth = 140;            // Pixels
 static const int kDangerousTextWidth = 200;   // Pixels
-static const int kHorizontalTextPadding = 2;  // Pixels
 static const int kVerticalPadding = 3;        // Pixels
-static const int kVerticalTextSpacer = 2;     // Pixels
 static const int kVerticalTextPadding = 2;    // Pixels
 static const int kTooltipMaxWidth = 800;      // Pixels
 
 // We add some padding before the left image so that the progress animation icon
 // hides the corners of the left image.
 static const int kLeftPadding = 0;  // Pixels.
 
 // The space between the Save and Discard buttons when prompting for a dangerous
 // download.
 static const int kButtonPadding = 5;  // Pixels.
@@ skipping 1199 matching lines @@
 void DownloadItemView::AnimateStateTransition(State from, State to,
                                               gfx::SlideAnimation* animation) {
   if (from == NORMAL && to == HOT) {
     animation->Show();
   } else if (from == HOT && to == NORMAL) {
     animation->Hide();
   } else if (from != to) {
     animation->Reset((to == HOT) ? 1.0 : 0.0);
   }
 }