base::mac::IsOSSierra() -> base::mac::IsOS10_12(), etc.

components/crash/content/app/breakpad_mac.mm

 // Copyright 2013 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.
 
 #import "components/crash/content/app/breakpad_mac.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #import <Foundation/Foundation.h>
 #include <stddef.h>
 #include <string.h>
@@ skipping 223 matching lines @@
     [breakpad_config setObject:@"NO" forKey:@BREAKPAD_SEND_AND_EXIT];
 
   base::FilePath dir_crash_dumps;
   GetCrashReporterClient()->GetCrashDumpLocation(&dir_crash_dumps);
   [breakpad_config setObject:base::SysUTF8ToNSString(dir_crash_dumps.value())
                       forKey:@BREAKPAD_DUMP_DIRECTORY];
 
   // Temporarily run Breakpad in-process on 10.10 and later because APIs that
   // it depends on got broken (http://crbug.com/386208).
   // This can catch crashes in the browser process only.
-  if (is_browser && base::mac::IsOSYosemiteOrLater()) {
+  if (is_browser && base::mac::IsAtLeastOS10_10()) {
     [breakpad_config setObject:[NSNumber numberWithBool:YES]
                         forKey:@BREAKPAD_IN_PROCESS];
   }
 
   // Initialize Breakpad.
   gBreakpadRef = BreakpadCreate(breakpad_config);
   if (!gBreakpadRef) {
     LOG_IF(ERROR, base::mac::AmIBundled()) << "Breakpad initialization failed";
     return;
   }
@@ skipping 34 matching lines @@
 
   // Store process type in crash dump.
   SetCrashKeyValue(@"ptype", process_type);
 
   NSString* pid_value =
       [NSString stringWithFormat:@"%d", static_cast<unsigned int>(getpid())];
   SetCrashKeyValue(@"pid", pid_value);
 }
 
 }  // namespace breakpad