Revert of Create BUILD.gn files for //media/filters.

media/base/BUILD.gn

Index: media/base/BUILD.gn
diff --git a/media/base/BUILD.gn b/media/base/BUILD.gn
index 84542032c399c955259532208ca9f88c5a503d13..a4c5a309e029a563ff64d80ad5cd215ffd99d59c 100644
--- a/media/base/BUILD.gn
+++ b/media/base/BUILD.gn
@@ -304,14 +304,10 @@
         "media_file_checker.cc",
         "media_file_checker.h",
       ]
-      deps += [ "//media/filters:filters_common" ]
+      deps += [ "//media:filters_common" ]
     }
 
     deps += [ "//third_party/ffmpeg" ]
-  }
-
-  if (media_use_libvpx) {
-    deps += [ "//third_party/libvpx" ]
   }
 
   if (is_android) {