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

chrome/browser/ui/views/frame/browser_view_layout.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/views/frame/browser_view_layout.h"
 
 #include "base/observer_list.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ skipping 21 matching lines @@
 
 using views::View;
 using web_modal::WebContentsModalDialogHost;
 using web_modal::ModalDialogHostObserver;
 
 namespace {
 
 // The visible height of the shadow above the tabs. Clicks in this area are
 // treated as clicks to the frame, rather than clicks to the tab.
 const int kTabShadowSize = 2;
-// The number of pixels the bookmark bar should overlap the spacer by if the
-// spacer is visible.
-const int kSpacerBookmarkBarOverlap = 1;
 // The number of pixels the metro switcher is offset from the right edge.
 const int kWindowSwitcherOffsetX = 7;
 // The number of pixels the constrained window should overlap the bottom
 // of the omnibox.
 const int kConstrainedWindowOverlap = 3;
 
 // Combines View::ConvertPointToTarget and View::HitTest for a given |point|.
 // Converts |point| from |src| to |dst| and hit tests it against |dst|. The
 // converted |point| can then be retrieved and used for additional tests.
 bool ConvertedHitTest(views::View* src, views::View* dst, gfx::Point* point) {
@@ skipping 521 matching lines @@
   return bottom;
 }
 
 bool BrowserViewLayout::InfobarVisible() const {
   // Cast to a views::View to access GetPreferredSize().
   views::View* infobar_container = infobar_container_;
   // NOTE: Can't check if the size IsEmpty() since it's always 0-width.
   return browser_->SupportsWindowFeature(Browser::FEATURE_INFOBAR) &&
       (infobar_container->GetPreferredSize().height() != 0);
 }