Add vaapi_h264_decoder_test.

content/common/gpu/media/vaapi_wrapper.h

Index: content/common/gpu/media/vaapi_wrapper.h
diff --git a/content/common/gpu/media/vaapi_wrapper.h b/content/common/gpu/media/vaapi_wrapper.h
index 850bebdea384352b1f1fb2474145a0c09628bce7..1ea0b7a4f9fa0f2940a38c71ec626e36a7fca9ce 100644
--- a/content/common/gpu/media/vaapi_wrapper.h
+++ b/content/common/gpu/media/vaapi_wrapper.h
@@ -15,6 +15,7 @@
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/va_surface.h"
 #include "media/base/video_decoder_config.h"
+#include "media/base/video_frame.h"
 #include "third_party/libva/va/va.h"
 #include "third_party/libva/va/va_x11.h"
 #include "ui/gfx/size.h"
@@ -81,6 +82,13 @@ class CONTENT_EXPORT VaapiWrapper {
   // Returns true if the VAAPI version is less than the specified version.
   bool VAAPIVersionLessThan(int major, int minor);
 
+  // Get the surface data and return it as a VideoFrame. The VideoFrame
+  // contains I420 formatted data. Currently it only handles VASurface with
+  // NV12 format. This is inteded to be used for testing code only because it
+  // makes a copy.
+  scoped_refptr<media::VideoFrame> VideoFrameFromVASurface(
+      VASurfaceID va_surface_id);
+
  private:
   VaapiWrapper();