Revert "Enable DMP for system Chromium WebView on Android"

third_party/tcmalloc/chromium/src/malloc_hook_mmap_linux.h

 // Copyright (c) 2005, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 // (which we're overriding with our mmap64() and mmap() wrappers) so we can't
 // just call through to them.
 
 #ifndef __linux
 # error Should only be including malloc_hook_mmap_linux.h on linux systems.
 #endif
 
 #include <unistd.h>
 #if defined(__ANDROID__)
 #include <sys/syscall.h>
-#ifndef ANDROID_NON_SDK_BUILD
 #include <sys/linux-syscalls.h>
-#endif
 #else
 #include <syscall.h>
 #endif
 #include <sys/mman.h>
 #include <errno.h>
 #include "base/linux_syscall_support.h"
 
 // SYS_mmap2, SYS_munmap, SYS_mremap and __off64_t are not defined in Android.
 #if defined(__ANDROID__)
 #if defined(__NR_mmap) && !defined(SYS_mmap)
@@ skipping 203 matching lines @@
   int result;
   if (!MallocHook::InvokeMunmapReplacement(start, length, &result)) {
     result = syscall(SYS_munmap, start, length);
   }
   return result;
 }
 
 #undef MALLOC_HOOK_HAVE_DO_MMAP64
 
 #endif  // #ifdef MALLOC_HOOK_HAVE_DO_MMAP64