Linux sandbox: Restrict sched_* and ioprio_* calls in the cros arm GPU policy.

content/common/sandbox_linux/bpf_cros_arm_gpu_policy_linux.cc

 // Copyright (c) 2013 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 "content/common/sandbox_linux/bpf_cros_arm_gpu_policy_linux.h"
 
 #include <dlfcn.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/socket.h>
@@ skipping 134 matching lines @@
     case __NR_uname:
       return Allow();
     // Allow only AF_UNIX for |domain|.
     case __NR_socket:
     case __NR_socketpair: {
       const Arg<int> domain(0);
       return If(domain == AF_UNIX, Allow()).Else(Error(EPERM));
     }
 #endif  // defined(__arm__)
     default:
-      if (SyscallSets::IsAdvancedScheduler(sysno))
-        return Allow();
-
       // Default to the generic GPU policy.
       return GpuProcessPolicy::EvaluateSyscall(sysno);
   }
 }
 
 bool CrosArmGpuProcessPolicy::PreSandboxHook() {
   DCHECK(IsChromeOS() && IsArchitectureArm());
   // Create a new broker process.
   DCHECK(!broker_process());
 
@@ skipping 13 matching lines @@
   // Preload the Tegra V4L2 (video decode acceleration) library.
   dlopen("/usr/lib/libtegrav4l2.so", dlopen_flag);
   // Resetting errno since platform-specific libraries will fail on other
   // platforms.
   errno = 0;
 
   return true;
 }
 
 }  // namespace content