Fix a test failure as GetFileSize() will not set the size if it fails

When GetFileSize() fails, it does not set the size.
The test should test the return value rather than the size.

BUG=324841

Review URL: https://codereview.chromium.org/93963003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238180 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238180
media: Adding test file for libvpx odd height/width

Adding a test file to test vpx_video_decoder for files with odd
width/height.

BUG=315817
R=scherkus@chromium.org, xhwang@chromium.org

Review URL: https://codereview.chromium.org/99533003

Patch from Vignesh <vigneshv@chromium.org>.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238181 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238181