mac: Delete more 10.5-only code

ui/gfx/video_decode_acceleration_support_mac_unittest.mm

 // 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/gfx/video_decode_acceleration_support_mac.h"
 
 #import "base/bind.h"
 #include "base/location.h"
 #import "base/mac/foundation_util.h"
-#import "base/mac/mac_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/message_loop.h"
 #import "base/sys_info.h"
 #import "base/threading/platform_thread.h"
 #import "base/threading/thread.h"
 #import "ui/base/test/ui_cocoa_test_helper.h"
 
 namespace {
 
 // Aribtrary values used to test the callback.
 const int kCallbackFrameID = 10;
 const int kCallbackExpectedStatus = 7;
 
 // Sample movie data to create the decoder.
 const int kSampleWidth = 1280;
 const int kSampleHeight = 720;
 const uint8_t kSampleAVCData[] =  {
   0x1, 0x64, 0x0, 0x1f, 0xff, 0xe1, 0x0, 0x1a,
   0x67, 0x64, 0x0, 0x1f, 0xac, 0x2c, 0xc5, 0x1,
   0x40, 0x16, 0xec, 0x4, 0x40, 0x0, 0x0, 0x3,
   0x0, 0x40, 0x0, 0x0, 0xf, 0x23, 0xc6, 0xc,
   0x65, 0x80, 0x1, 0x0, 0x5, 0x68, 0xe9, 0x2b,
   0x2c, 0x8b,
 };
 
 // Check to see if the OS we're running on should have
 // VideoDecodeAcceleration.framework installed.
 bool OSShouldHaveFramework() {
-  if (base::mac::IsOSLeopardOrEarlier())
-    return false;
-
   // 10.6.2 and earlier doesn't have the framework.
+  // If we ever drop 10.6 support and clean up IsOSSnowLeopard() calls, this
+  // can be removed too.
   int32 major, minor, bugfix;
   base::SysInfo::OperatingSystemVersionNumbers(&major, &minor, &bugfix);
   if (major == 10 && minor == 6 && bugfix <= 2)
     return false;
 
   return true;
 }
 
 // This function is provided as a callback for
 // VideoDecodeAccelerationSupport::Decode. It verifies that callback
@@ skipping 69 matching lines @@
   // Wait for the thread to complete.
   thread.Stop();
 
   // Verify that the callback occured.
   EXPECT_FALSE(callback_done);
   loop.RunAllPending();
   EXPECT_TRUE(callback_done);
 }
 
 }  // namespace gfx