Revert of [Android] Fix Microdump generation when Seccomp-BPF is enabled.

content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc

Index: content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc
diff --git a/content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc b/content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc
index 7074a2d44f9cc5841cd5b325e8477466613a3f14..c3b1605fc7dc6f091ae5456aad0371bcf2ee7c1a 100644
--- a/content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc
+++ b/content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.cc
@@ -4,32 +4,16 @@
 
 #include "content/common/sandbox_linux/android/sandbox_bpf_base_policy_android.h"
 
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/socket.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
 
 #include "build/build_config.h"
 #include "sandbox/linux/bpf_dsl/bpf_dsl.h"
 
-using sandbox::bpf_dsl::AllOf;
 using sandbox::bpf_dsl::Allow;
-using sandbox::bpf_dsl::AnyOf;
-using sandbox::bpf_dsl::Arg;
-using sandbox::bpf_dsl::If;
-using sandbox::bpf_dsl::Error;
 using sandbox::bpf_dsl::ResultExpr;
 
 namespace content {
-
-#ifndef SOCK_CLOEXEC
-#define SOCK_CLOEXEC O_CLOEXEC
-#endif
-
-#ifndef SOCK_NONBLOCK
-#define SOCK_NONBLOCK O_NONBLOCK
-#endif
 
 SandboxBPFBasePolicyAndroid::SandboxBPFBasePolicyAndroid()
     : SandboxBPFBasePolicy() {}
@@ -46,10 +30,8 @@
     case __NR_flock:
 #if defined(__x86_64__) || defined(__aarch64__)
     case __NR_newfstatat:
-    case __NR_getdents64:
 #elif defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_fstatat64:
-    case __NR_getdents:
 #endif
     case __NR_getpriority:
     case __NR_ioctl:
@@ -74,30 +56,8 @@
     case __NR_getrlimit:
 #endif
     case __NR_uname:
-
-    // Permit socket operations so that renderers can connect to logd and
-    // debuggerd. The arguments to socket() are further restricted below.
-    case __NR_socket:
-    case __NR_connect:
-
-    // Ptrace is allowed so the Breakpad Microdumper can fork in a renderer
-    // and then ptrace the parent.
-    case __NR_ptrace:
       override_and_allow = true;
       break;
-  }
-
-  if (sysno == __NR_socket) {
-    const Arg<int> domain(0);
-    const Arg<int> type(1);
-    const Arg<int> protocol(2);
-    const int kSockFlags = SOCK_CLOEXEC | SOCK_NONBLOCK;
-    return If(AllOf(domain == AF_UNIX,
-                    AnyOf((type & ~kSockFlags) == SOCK_DGRAM,
-                          (type & ~kSockFlags) == SOCK_STREAM),
-                    protocol == 0),
-              Allow())
-           .Else(Error(EPERM));
   }
 
   if (override_and_allow)