Use video profile to decide if we should produce fp16 textures.

media/gpu/dxva_picture_buffer_win.h

Index: media/gpu/dxva_picture_buffer_win.h
diff --git a/media/gpu/dxva_picture_buffer_win.h b/media/gpu/dxva_picture_buffer_win.h
index 959504fec69281bf4aa2098ffe8c20618575f85d..ee4ce0c6c79c5590729c90679d1f41a800d196f4 100644
--- a/media/gpu/dxva_picture_buffer_win.h
+++ b/media/gpu/dxva_picture_buffer_win.h
@@ -90,7 +90,8 @@ class PbufferPictureBuffer : public DXVAPictureBuffer {
   bool Initialize(const DXVAVideoDecodeAccelerator& decoder,
                   EGLConfig egl_config);
   bool InitializeTexture(const DXVAVideoDecodeAccelerator& decoder,
-                         bool use_rgb);
+                         bool use_rgb,
+                         bool use_fp16);
 
   bool ReusePictureBuffer() override;
   void ResetReuseFence() override;