Revert 114929 - Standardize StringToInt{,64} interface.

base/mac/mac_util.mm

 // Copyright (c) 2011 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 "base/mac/mac_util.h"
 
 #import <Cocoa/Cocoa.h>
 #include <string.h>
 #include <sys/utsname.h>
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_nsobject.h"
 #include "base/string_number_conversions.h"
-#include "base/string_piece.h"
 #include "base/sys_string_conversions.h"
 
 namespace base {
 namespace mac {
 
 namespace {
 
 // The current count of outstanding requests for full screen mode from browser
 // windows, plugins, etc.
 int g_full_screen_requests[kNumFullScreenModes] = { 0, 0, 0};
@@ skipping 487 matching lines @@
   }
 
   if (strcmp(uname_info.sysname, "Darwin") != 0) {
     DLOG(ERROR) << "unexpected uname sysname " << uname_info.sysname;
     return 0;
   }
 
   int darwin_major_version = 0;
   char* dot = strchr(uname_info.release, '.');
   if (dot) {
-    if (!base::StringToInt(base::StringPiece(uname_info.release,
-                                             dot - uname_info.release),
-                           &darwin_major_version)) {
+    if (!base::StringToInt(uname_info.release, dot, &darwin_major_version)) {
       dot = NULL;
     }
   }
 
   if (!dot) {
     DLOG(ERROR) << "could not parse uname release " << uname_info.release;
     return 0;
   }
 
   return darwin_major_version;
@@ skipping 78 matching lines @@
 #endif
 
 #if !defined(BASE_MAC_MAC_UTIL_H_INLINED_GT_10_7)
 bool IsOSLaterThanLion() {
   return MacOSXMinorVersion() > LION_MINOR_VERSION;
 }
 #endif
 
 }  // namespace mac
 }  // namespace base