VAVEA: Turn VAAPI encoder flag into a kill switch.

content/common/gpu/media/gpu_video_encode_accelerator.cc

 // Copyright 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/gpu/media/gpu_video_encode_accelerator.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/shared_memory.h"
@@ skipping 174 matching lines @@
   DCHECK(!encoder_);
 #if defined(OS_CHROMEOS) && defined(USE_X11)
 #if defined(ARCH_CPU_ARMEL)
   scoped_ptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kEncoder);
   if (!device.get())
     return;
 
   encoder_.reset(new V4L2VideoEncodeAccelerator(device.Pass()));
 #elif defined(ARCH_CPU_X86_FAMILY)
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
-  if (cmd_line->HasSwitch(switches::kEnableVaapiAcceleratedVideoEncode))
+  if (!cmd_line->HasSwitch(switches::kDisableVaapiAcceleratedVideoEncode))
     encoder_.reset(new VaapiVideoEncodeAccelerator(gfx::GetXDisplay()));
 #endif
 #elif defined(OS_ANDROID) && defined(ENABLE_WEBRTC)
   encoder_.reset(new AndroidVideoEncodeAccelerator());
 #endif
 }
 
 void GpuVideoEncodeAccelerator::OnEncode(int32 frame_id,
                                          base::SharedMemoryHandle buffer_handle,
                                          uint32 buffer_size,
@@ skipping 102 matching lines @@
   stub_->channel()->Send(message);
 }
 
 void GpuVideoEncodeAccelerator::SendCreateEncoderReply(IPC::Message* message,
                                                        bool succeeded) {
   GpuCommandBufferMsg_CreateVideoEncoder::WriteReplyParams(message, succeeded);
   Send(message);
 }
 
 }  // namespace content