[Mac Fix-It] removed base::mac::AmIForeground function.

base/mac/mac_util.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 "base/mac/mac_util.h"
 
 #import <Cocoa/Cocoa.h>
 #import <IOKit/IOKitLib.h>
 #include <errno.h>
 #include <stddef.h>
@@ skipping 200 matching lines @@
 
   DCHECK_GT(g_full_screen_requests[from_mode], 0);
   DCHECK_GE(g_full_screen_requests[to_mode], 0);
   g_full_screen_requests[from_mode] =
       std::max(g_full_screen_requests[from_mode] - 1, 0);
   g_full_screen_requests[to_mode] =
       std::max(g_full_screen_requests[to_mode] + 1, 1);
   SetUIMode();
 }
 
-bool AmIForeground() {
-  ProcessSerialNumber foreground_psn = { 0 };
-  OSErr err = GetFrontProcess(&foreground_psn);
-  if (err != noErr) {
-    OSSTATUS_DLOG(WARNING, err) << "GetFrontProcess";
-    return false;
-  }
-
-  ProcessSerialNumber my_psn = { 0, kCurrentProcess };
-
-  Boolean result = FALSE;
-  err = SameProcess(&foreground_psn, &my_psn, &result);
-  if (err != noErr) {
-    OSSTATUS_DLOG(WARNING, err) << "SameProcess";
-    return false;
-  }
-
-  return result;
-}
-
 bool SetFileBackupExclusion(const FilePath& file_path) {
   NSString* file_path_ns =
       [NSString stringWithUTF8String:file_path.value().c_str()];
   NSURL* file_url = [NSURL fileURLWithPath:file_path_ns];
 
   // When excludeByPath is true the application must be running with root
   // privileges (admin for 10.6 and earlier) but the URL does not have to
   // already exist. When excludeByPath is false the URL must already exist but
   // can be used in non-root (or admin as above) mode. We use false so that
   // non-root (or admin) users don't get their TimeMachine drive filled up with
@@ skipping 244 matching lines @@
           StringPiece(begin + comma_loc + 1, ident.end()), &minor_tmp))
     return false;
   *type = ident.substr(0, number_loc);
   *major = major_tmp;
   *minor = minor_tmp;
   return true;
 }
 
 }  // namespace mac
 }  // namespace base