Rewrite all BPF policies to use DSL API

content/common/sandbox_linux/bpf_renderer_policy_linux.cc

Index: content/common/sandbox_linux/bpf_renderer_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_renderer_policy_linux.cc b/content/common/sandbox_linux/bpf_renderer_policy_linux.cc
index 267977866946bde9f14e1d9c9022d8052f52454c..d8e13dc950156cdc89195baaddd4653f77693988 100644
--- a/content/common/sandbox_linux/bpf_renderer_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_renderer_policy_linux.cc
@@ -9,11 +9,13 @@
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "content/common/sandbox_linux/sandbox_linux.h"
+#include "sandbox/linux/seccomp-bpf-helpers/bpf_dsl.h"
 #include "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h"
 #include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h"
 #include "sandbox/linux/seccomp-bpf/sandbox_bpf_policy.h"
 #include "sandbox/linux/services/linux_syscalls.h"
 
+using namespace sandbox::bpf_dsl;
 using sandbox::SyscallSets;
 
 namespace content {
@@ -21,13 +23,12 @@ namespace content {
 RendererProcessPolicy::RendererProcessPolicy() {}
 RendererProcessPolicy::~RendererProcessPolicy() {}
 
-ErrorCode RendererProcessPolicy::EvaluateSyscall(SandboxBPF* sandbox,
-                                                 int sysno) const {
+ResultExpr RendererProcessPolicy::EvaluateSyscall(int sysno) const {
   switch (sysno) {
     case __NR_ioctl:
-      return sandbox::RestrictIoctl(sandbox);
+      return sandbox::RestrictIoctl();
     case __NR_prctl:
-      return sandbox::RestrictPrctl(sandbox);
+      return sandbox::RestrictPrctl();
     // Allow the system calls below.
     // The baseline policy allows __NR_clock_gettime. Allow
     // clock_getres() for V8. crbug.com/329053.
@@ -54,12 +55,12 @@ ErrorCode RendererProcessPolicy::EvaluateSyscall(SandboxBPF* sandbox,
     case __NR_sysinfo:
     case __NR_times:
     case __NR_uname:
-      return ErrorCode(ErrorCode::ERR_ALLOWED);
+      return Allow();
     case __NR_prlimit64:
-      return ErrorCode(EPERM);  // See crbug.com/160157.
+      return Error(EPERM);  // See crbug.com/160157.
     default:
       // Default on the content baseline policy.
-      return SandboxBPFBasePolicy::EvaluateSyscall(sandbox, sysno);
+      return SandboxBPFBasePolicy::EvaluateSyscall(sysno);
   }
 }