Rewrite all BPF policies to use DSL API

content/common/sandbox_linux/bpf_ppapi_policy_linux.cc

Index: content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc b/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
index 4c806228a8e8208df13bc149497156fc137cd5d8..cd7acde718ae920a2175ed0ed81defda5bcfa343 100644
--- a/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
@@ -14,6 +14,7 @@
 #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 {
@@ -21,8 +22,7 @@ namespace content {
 PpapiProcessPolicy::PpapiProcessPolicy() {}
 PpapiProcessPolicy::~PpapiProcessPolicy() {}
 
-ErrorCode PpapiProcessPolicy::EvaluateSyscall(SandboxBPF* sandbox,
-                                              int sysno) const {
+ResultExpr PpapiProcessPolicy::EvaluateSyscall(int sysno) const {
   switch (sysno) {
     case __NR_pread64:
     case __NR_pwrite64:
@@ -33,12 +33,12 @@ ErrorCode PpapiProcessPolicy::EvaluateSyscall(SandboxBPF* sandbox,
     case __NR_sched_getscheduler:
     case __NR_sched_setscheduler:
     case __NR_times:
-      return ErrorCode(ErrorCode::ERR_ALLOWED);
+      return Allow();
     case __NR_ioctl:
-      return ErrorCode(ENOTTY);  // Flash Access.
+      return Error(ENOTTY);  // Flash Access.
     default:
       // Default on the baseline policy.
-      return SandboxBPFBasePolicy::EvaluateSyscall(sandbox, sysno);
+      return SandboxBPFBasePolicy::EvaluateSyscall(sysno);
   }
 }