Remove cruft from ffmpeg....

third_party/ffmpeg/ffmpeg.gyp

Index: third_party/ffmpeg/ffmpeg.gyp
===================================================================
--- third_party/ffmpeg/ffmpeg.gyp	(revision 30804)
+++ third_party/ffmpeg/ffmpeg.gyp	(working copy)
@@ -134,27 +134,13 @@
             'source/patched-ffmpeg-mt/libavformat/riff.c',
             'source/patched-ffmpeg-mt/libavformat/sdp.c',
             'source/patched-ffmpeg-mt/libavformat/utils.c',
-            'source/patched-ffmpeg-mt/libavutil/adler32.c',
-            'source/patched-ffmpeg-mt/libavutil/aes.c',
             'source/patched-ffmpeg-mt/libavutil/avstring.c',
-            'source/patched-ffmpeg-mt/libavutil/base64.c',
             'source/patched-ffmpeg-mt/libavutil/crc.c',
-            'source/patched-ffmpeg-mt/libavutil/des.c',
-            'source/patched-ffmpeg-mt/libavutil/fifo.c',
             'source/patched-ffmpeg-mt/libavutil/intfloat_readwrite.c',
-            'source/patched-ffmpeg-mt/libavutil/lfg.c',
-            'source/patched-ffmpeg-mt/libavutil/lls.c',
             'source/patched-ffmpeg-mt/libavutil/log.c',
-            'source/patched-ffmpeg-mt/libavutil/lzo.c',
             'source/patched-ffmpeg-mt/libavutil/mathematics.c',
-            'source/patched-ffmpeg-mt/libavutil/md5.c',
             'source/patched-ffmpeg-mt/libavutil/mem.c',
-            'source/patched-ffmpeg-mt/libavutil/random_seed.c',
             'source/patched-ffmpeg-mt/libavutil/rational.c',
-            'source/patched-ffmpeg-mt/libavutil/rc4.c',
-            'source/patched-ffmpeg-mt/libavutil/sha1.c',
-            'source/patched-ffmpeg-mt/libavutil/tree.c',
-            'source/patched-ffmpeg-mt/libavutil/utils.c',
 
             # Config file for the OS and architecture.
             'source/config/<(ffmpeg_branding)/<(OS)/<(target_arch)/config.h',
@@ -389,22 +375,14 @@
         '<(ffmpeg_include_root)/libavcodec/xvmc.h',
         '<(ffmpeg_include_root)/libavformat/avformat.h',
         '<(ffmpeg_include_root)/libavformat/avio.h',
-        '<(ffmpeg_include_root)/libavutil/adler32.h',
         '<(ffmpeg_include_root)/libavutil/avstring.h',
-        '<(ffmpeg_include_root)/libavutil/avutil.h',
-        '<(ffmpeg_include_root)/libavutil/base64.h',
-        '<(ffmpeg_include_root)/libavutil/common.h',
         '<(ffmpeg_include_root)/libavutil/crc.h',
-        '<(ffmpeg_include_root)/libavutil/fifo.h',
         '<(ffmpeg_include_root)/libavutil/intfloat_readwrite.h',
         '<(ffmpeg_include_root)/libavutil/log.h',
-        '<(ffmpeg_include_root)/libavutil/lzo.h',
         '<(ffmpeg_include_root)/libavutil/mathematics.h',
-        '<(ffmpeg_include_root)/libavutil/md5.h',
         '<(ffmpeg_include_root)/libavutil/mem.h',
         '<(ffmpeg_include_root)/libavutil/pixfmt.h',
         '<(ffmpeg_include_root)/libavutil/rational.h',
-        '<(ffmpeg_include_root)/libavutil/sha1.h',
 
         # Hacks to introduce C99 types into Visual Studio.
         'include/win/inttypes.h',