mac: Delete more 10.5-only code

chrome/browser/gpu_util.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/gpu_util.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "chrome/browser/gpu_blacklist.h"
 #include "chrome/common/chrome_version_info.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/common/compositor_util.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/gpu_info.h"
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
-#elif defined(OS_MACOSX)
-#include "base/mac/mac_util.h"
 #endif
 
 using content::GpuDataManager;
 using content::GpuFeatureType;
 
 namespace {
 
 const char kGpuFeatureNameAccelerated2dCanvas[] = "accelerated_2d_canvas";
 const char kGpuFeatureNameAcceleratedCompositing[] = "accelerated_compositing";
 const char kGpuFeatureNameWebgl[] = "webgl";
@@ skipping 136 matching lines @@
 
 void InitializeCompositingFieldTrial() {
 // Enable the field trial only on desktop OS's.
 #if !(defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX))
   return;
 #endif
 #if defined(OS_WIN)
   // Don't run the trial on Windows XP.
   if (base::win::GetVersion() < base::win::VERSION_VISTA)
     return;
-#elif defined(OS_MACOSX)
-  // Accelerated compositing is only implemented on Mac OSX 10.6 or later.
-  if (base::mac::IsOSLeopardOrEarlier())
-    return;
 #endif
 
   // The performance of accelerated compositing is too low with software
   // rendering.
   if (content::GpuDataManager::GetInstance()->ShouldUseSoftwareRendering())
     return;
 
   // Don't activate the field trial if force-compositing-mode has been
   // explicitly disabled from the command line.
   if (CommandLine::ForCurrentProcess()->HasSwitch(
@@ skipping 420 matching lines @@
         kGpuBlacklistFeatureHistogramNamesWin[i],
         1, kNumWinSubVersions * kGpuFeatureNumStatus,
         kNumWinSubVersions * kGpuFeatureNumStatus + 1,
         base::Histogram::kUmaTargetedHistogramFlag);
     histogram_pointer->Add(GetGpuBlacklistHistogramValueWin(value));
 #endif
   }
 }
 
 }  // namespace gpu_util;