Add yasm and ffmpeg into the build tree for linux.

chrome/installer/installer.gyp

 {
   'variables': {
     'version_py': '../../chrome/tools/build/version.py',
     'version_path': '../../chrome/VERSION',
     'lastchange_path': '<(SHARED_INTERMEDIATE_DIR)/build/LASTCHANGE',
     # 'branding_dir' is set in the 'conditions' section at the bottom.
   },
   'conditions': [
     ['OS=="win"', {
       'targets': [
@@ skipping 466 matching lines @@
           ],
           'variables': {
             'version' : '<!(python <(version_py) -f ../../chrome/VERSION -t "@MAJOR@.@MINOR@.@BUILD@.@PATCH@")',
             'revision' : '<!(python ../../build/util/lastchange.py | cut -d "=" -f 2)',
             'input_files': [
               # TODO(mmoss) Any convenient way to get all the relevant build
               # files? (e.g. all locales, resources, etc.)
               '<(PRODUCT_DIR)/chrome',
               '<(PRODUCT_DIR)/chrome.pak',
               '<(PRODUCT_DIR)/chrome_sandbox',
-              '<(PRODUCT_DIR)/libavcodec.so.52',
-              '<(PRODUCT_DIR)/libavformat.so.52',
-              '<(PRODUCT_DIR)/libavutil.so.50',
+              '<(PRODUCT_DIR)/libffmpegsumo.so',
               '<(PRODUCT_DIR)/xdg-settings',
               '<(PRODUCT_DIR)/locales/en-US.pak',
               '<(PRODUCT_DIR)/themes/default.pak',
             ],
             'flock_bash': ['flock', '--', '/tmp/linux_package_lock', 'bash'],
             'deb_build': '<(PRODUCT_DIR)/installer/debian/build.sh',
             'rpm_build': '<(PRODUCT_DIR)/installer/rpm/build.sh',
             'deb_cmd': ['<@(flock_bash)', '<(deb_build)', '-o' '<(PRODUCT_DIR)',
                         '-b', '<(PRODUCT_DIR)', '-a', '<(target_arch)'],
             'rpm_cmd': ['<@(flock_bash)', '<(rpm_build)', '-o' '<(PRODUCT_DIR)',
@@ skipping 129 matching lines @@
       },
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: