Clean up a few more unused globals.

ui/base/layout.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 "ui/base/layout.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 46 matching lines @@
 
   // We use the touch layout only when we are running in Metro mode.
   return base::win::IsMetroProcess() && ui::IsTouchDevicePresent();
 }
 #endif  // defined(OS_WIN)
 
 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.25f, 1.33f, 1.4f, 1.5f, 1.8f,
                                     2.0f};
 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales),
                kScaleFactorScales_incorrect_size);
-const size_t kScaleFactorScalesLength = arraysize(kScaleFactorScales);
 
 }  // namespace
 
 DisplayLayout GetDisplayLayout() {
 #if defined(OS_WIN)
   if (UseTouchOptimizedUI())
     return LAYOUT_TOUCH;
 #endif
   return LAYOUT_DESKTOP;
 }
@@ skipping 97 matching lines @@
   gfx::Screen* screen = gfx::Screen::GetScreenFor(view);
   if (screen->IsDIPEnabled()) {
     gfx::Display display = screen->GetDisplayNearestWindow(view);
     return GetSupportedScaleFactor(display.device_scale_factor());
   }
   return ui::SCALE_FACTOR_100P;
 }
 #endif  // !defined(OS_MACOSX)
 
 }  // namespace ui