VAVEA: Turn VAAPI encoder flag into a kill switch.

content/common/sandbox_linux/bpf_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_gpu_policy_linux.h"
 
 #include <dlfcn.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/socket.h>
@@ skipping 60 matching lines @@
   return false;
 #endif
 }
 
 bool IsAcceleratedVideoEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
   bool accelerated_encode_enabled = false;
 #if defined(OS_CHROMEOS)
   accelerated_encode_enabled =
-      command_line.HasSwitch(switches::kEnableVaapiAcceleratedVideoEncode);
+      !command_line.HasSwitch(switches::kDisableVaapiAcceleratedVideoEncode);
 #endif
   return !command_line.HasSwitch(switches::kDisableAcceleratedVideoDecode) ||
          accelerated_encode_enabled;
 }
 
 intptr_t GpuSIGSYS_Handler(const struct arch_seccomp_data& args,
                            void* aux_broker_process) {
   RAW_CHECK(aux_broker_process);
   BrokerProcess* broker_process =
       static_cast<BrokerProcess*>(aux_broker_process);
@@ skipping 175 matching lines @@
   broker_process_ = new BrokerProcess(GetFSDeniedErrno(),
                                       read_whitelist,
                                       write_whitelist);
   // The initialization callback will perform generic initialization and then
   // call broker_sandboxer_callback.
   CHECK(broker_process_->Init(base::Bind(&UpdateProcessTypeAndEnableSandbox,
                                          broker_sandboxer_allocator)));
 }
 
 }  // namespace content