Revert of Attach color space information to hardware decoded NV12 video frames.

media/video/picture.cc

Index: media/video/picture.cc
diff --git a/media/video/picture.cc b/media/video/picture.cc
index 51398850d9c6a04bad45a9d472766652f628a7e9..6722176f9f4a52765f0753354f197851a5e5fba2 100644
--- a/media/video/picture.cc
+++ b/media/video/picture.cc
@@ -41,12 +41,10 @@
 Picture::Picture(int32_t picture_buffer_id,
                  int32_t bitstream_buffer_id,
                  const gfx::Rect& visible_rect,
-                 const gfx::ColorSpace& color_space,
                  bool allow_overlay)
     : picture_buffer_id_(picture_buffer_id),
       bitstream_buffer_id_(bitstream_buffer_id),
       visible_rect_(visible_rect),
-      color_space_(color_space),
       allow_overlay_(allow_overlay),
       size_changed_(false) {}