telemetry: Enable GPU-specific test expectations on Android

Make it possible to specify on a GPU vendor/device basis whether a
telemetry test is expected to pass on Android. On desktop and CrOS we
use the PCI device identifiers for this purpose, but they are not
available on Android. Instead, this patch makes lets us match
expectations against the GL_VENDOR and GL_RENDERER strings.

BUG=306462

Review URL: https://codereview.chromium.org/27009002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228446 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228446