Enable HW VAVDA by libva-wayland backend.

content/common/gpu/media/gpu_video_decode_accelerator.cc

Index: content/common/gpu/media/gpu_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_video_decode_accelerator.cc b/content/common/gpu/media/gpu_video_decode_accelerator.cc
index 1680c9c31217738394dfd1f1f8eb0b710902724c..3c630165bf414756ab1fe5a3c66c1de757441931 100644
--- a/content/common/gpu/media/gpu_video_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_decode_accelerator.cc
@@ -28,10 +28,12 @@
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) && defined(USE_X11)
 #include "content/common/gpu/media/v4l2_video_decode_accelerator.h"
 #include "content/common/gpu/media/v4l2_video_device.h"
-#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
+#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
 #include "content/common/gpu/media/vaapi_video_decode_accelerator.h"
+#if defined(USE_X11)
 #include "ui/gl/gl_context_glx.h"
 #include "ui/gl/gl_implementation.h"
+#endif
 #elif defined(OS_ANDROID)
 #include "content/common/gpu/media/android_video_decode_accelerator.h"
 #endif
@@ -264,7 +266,8 @@ void GpuVideoDecodeAccelerator::Initialize(
                                      make_context_current_,
                                      device.Pass(),
                                      io_message_loop_));
-#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
+#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+#if defined(USE_X11)
   if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL) {
     VLOG(1) << "HW video decode acceleration not available without "
                "DesktopGL (GLX).";
@@ -275,6 +278,10 @@ void GpuVideoDecodeAccelerator::Initialize(
       static_cast<gfx::GLContextGLX*>(stub_->decoder()->GetGLContext());
   video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
       glx_context->display(), make_context_current_));
+#elif defined(USE_OZONE)
+  video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
+      make_context_current_));
+#endif
 #elif defined(OS_ANDROID)
   video_decode_accelerator_.reset(new AndroidVideoDecodeAccelerator(
       stub_->decoder()->AsWeakPtr(),