Added "lang" attribute to the component updater update requests.

This is a change similar to https://codereview.chromium.org/153273002/
but for the component updater.

BUG=336614

Review URL: https://codereview.chromium.org/165393009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251865 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251865
Media: AudioVideoMetadataParser - Parse rotation metadata.

BUG=332228

Review URL: https://codereview.chromium.org/148113012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251867 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251867