c++11: Allow lambdas, with some restrictions.

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 10 matching lines @@
 #if defined(OS_WIN)
 #include "base/win/metro.h"
 #include "ui/gfx/win/dpi.h"
 #include <Windows.h>
 #endif  // defined(OS_WIN)
 
 namespace ui {
 
 namespace {
 
-bool ScaleFactorComparator(const ScaleFactor& lhs, const ScaleFactor& rhs){
-  return GetScaleForScaleFactor(lhs) < GetScaleForScaleFactor(rhs);
-}
-
 std::vector<ScaleFactor>* g_supported_scale_factors = NULL;
 
 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.25f, 1.33f, 1.4f, 1.5f, 1.8f,
                                     2.0f, 2.5f, 3.0f};
 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales),
                kScaleFactorScales_incorrect_size);
 
 }  // namespace
 
 void SetSupportedScaleFactors(
     const std::vector<ui::ScaleFactor>& scale_factors) {
   if (g_supported_scale_factors != NULL)
     delete g_supported_scale_factors;
 
   g_supported_scale_factors = new std::vector<ScaleFactor>(scale_factors);
   std::sort(g_supported_scale_factors->begin(),
             g_supported_scale_factors->end(),
-            ScaleFactorComparator);
+            [](ScaleFactor lhs, ScaleFactor rhs) {
+    return GetScaleForScaleFactor(lhs) < GetScaleForScaleFactor(rhs);
+  });
 
   // Set ImageSkia's supported scales.
   std::vector<float> scales;
   for (std::vector<ScaleFactor>::const_iterator it =
           g_supported_scale_factors->begin();
        it != g_supported_scale_factors->end(); ++it) {
     scales.push_back(kScaleFactorScales[*it]);
   }
   gfx::ImageSkia::SetSupportedScales(scales);
 }
@@ skipping 58 matching lines @@
 
 #if !defined(OS_MACOSX)
 float GetScaleFactorForNativeView(gfx::NativeView view) {
   gfx::Screen* screen = gfx::Screen::GetScreenFor(view);
   gfx::Display display = screen->GetDisplayNearestWindow(view);
   return display.device_scale_factor();
 }
 #endif  // !defined(OS_MACOSX)
 
 }  // namespace ui