Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/va_x11.sigs

Index: content/common/gpu/media/va_x11.sigs
diff --git a/content/common/gpu/media/va_x11.sigs b/content/common/gpu/media/va_x11.sigs
deleted file mode 100644
index d87356b5c205594dc00640c758c9ededdbfca06f..0000000000000000000000000000000000000000
--- a/content/common/gpu/media/va_x11.sigs
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright 2014 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.
-
-//------------------------------------------------
-// Functions from libva-x11 used in chromium code.
-//------------------------------------------------
-VADisplay vaGetDisplay(Display *dpy);
-VAStatus vaPutSurface(VADisplay dpy, VASurfaceID surface, Drawable draw, short srcx, short srcy, unsigned short srcw, unsigned short srch, short destx, short desty, unsigned short destw, unsigned short desth, VARectangle *cliprects, unsigned int number_cliprects, unsigned int flags);