Reland: Refactor Vaapi video decoder/encoder in preparation of Freon support

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 f741cb20418fbecfa99b83d54dd814f131c33892..3d3a437751177dc61f38356e8e6d6ac9faf5911d 100644
--- a/content/common/gpu/media/gpu_video_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_decode_accelerator.cc
@@ -31,9 +31,8 @@
 #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"
-#include "ui/gl/gl_context_glx.h"
 #include "ui/gl/gl_implementation.h"
 #elif defined(USE_OZONE)
 #include "media/ozone/media_ozone_platform.h"
@@ -272,17 +271,9 @@ void GpuVideoDecodeAccelerator::Initialize(
       make_context_current_,
       device.Pass(),
       io_message_loop_));
-#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
-  if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL) {
-    VLOG(1) << "HW video decode acceleration not available without "
-               "DesktopGL (GLX).";
-    SendCreateDecoderReply(init_done_msg, false);
-    return;
-  }
-  gfx::GLContextGLX* glx_context =
-      static_cast<gfx::GLContextGLX*>(stub_->decoder()->GetGLContext());
-  video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
-      glx_context->display(), make_context_current_));
+#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+  video_decode_accelerator_.reset(
+      new VaapiVideoDecodeAccelerator(make_context_current_));
 #elif defined(USE_OZONE)
   media::MediaOzonePlatform* platform =
       media::MediaOzonePlatform::GetInstance();