Enable GLX/EGL backend switching while run HW video decode with libva.

content/common/gpu/media/gpu_video_decode_accelerator.cc

 // Copyright (c) 2012 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_decode_accelerator.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 260 matching lines @@
       this, make_context_current_));
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) && defined(USE_X11)
   video_decode_accelerator_.reset(new ExynosVideoDecodeAccelerator(
       gfx::GLSurfaceEGL::GetHardwareDisplay(),
       stub_->decoder()->GetGLContext()->GetHandle(),
       this,
       weak_factory_for_io_.GetWeakPtr(),
       make_context_current_,
       io_message_loop_));
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
+#if defined(VAVDA_VATEXTURE_EGL_BACKEND)
+  video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
+      gfx::GLSurfaceEGL::GetHardwareDisplay(),
+      stub_->decoder()->GetGLContext()->GetHandle(),
+      this,
+      make_context_current_));
+#else
   gfx::GLContextGLX* glx_context =
       static_cast<gfx::GLContextGLX*>(stub_->decoder()->GetGLContext());
   GLXContext glx_context_handle =
       static_cast<GLXContext>(glx_context->GetHandle());
   video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
       glx_context->display(), glx_context_handle, this,
       make_context_current_));
+#endif
 #elif defined(OS_ANDROID)
   video_decode_accelerator_.reset(new AndroidVideoDecodeAccelerator(
       this,
       stub_->decoder()->AsWeakPtr(),
       make_context_current_));
 #else
   NOTIMPLEMENTED() << "HW video decode acceleration not available.";
   NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
   return;
 #endif
@@ skipping 193 matching lines @@
   scoped_refptr<gpu::gles2::TextureRef> texture_ref = it->second;
   GLenum target = texture_ref->texture()->target();
   gpu::gles2::TextureManager* texture_manager =
       stub_->decoder()->GetContextGroup()->texture_manager();
   DCHECK(!texture_ref->texture()->IsLevelCleared(target, 0));
   texture_manager->SetLevelCleared(texture_ref, target, 0, true);
   uncleared_textures_.erase(it);
 }
 
 }  // namespace content