Enable VAAPI accelerated decode on Linux

content/common/gpu/media/gpu_jpeg_decode_accelerator.cc

Index: content/common/gpu/media/gpu_jpeg_decode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_jpeg_decode_accelerator.cc b/content/common/gpu/media/gpu_jpeg_decode_accelerator.cc
index 6bf6ae4fba7d8c9ea451af3334740a0647f4a69f..4fb97f8aef2193b0bd80ca05ad972b3d3fa4d3e1 100644
--- a/content/common/gpu/media/gpu_jpeg_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_jpeg_decode_accelerator.cc
@@ -23,7 +23,7 @@
 #include "media/gpu/ipc/common/media_messages.h"
 #include "ui/gfx/geometry/size.h"
 
-#if defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS) || defined(OS_LINUX)
 #if defined(ARCH_CPU_X86_FAMILY)
 #include "content/common/gpu/media/vaapi_jpeg_decode_accelerator.h"
 #endif
@@ -401,7 +401,7 @@ std::unique_ptr<media::JpegDecodeAccelerator>
 GpuJpegDecodeAccelerator::CreateVaapiJDA(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner) {
   std::unique_ptr<media::JpegDecodeAccelerator> decoder;
-#if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+#if (defined(OS_CHROMEOS) || defined(OS_LINUX)) && defined(ARCH_CPU_X86_FAMILY)
   decoder.reset(new VaapiJpegDecodeAccelerator(io_task_runner));
 #endif
   return decoder;