Revert 282140 "Roll libvpx 280676:281854"

Not all affected 444 tests disabled.

> Roll libvpx 280676:281854
> 
> Disable VP9 444 tests.
> B=392309
> 
> https://codereview.chromium.org/375983002
> https://codereview.chromium.org/376873009
> 
> R=scherkus@chromium.org, tomfinegan@chromium.org
> 
> Review URL: https://codereview.chromium.org/380493002

TBR=johannkoenig@chromium.org

Review URL: https://codereview.chromium.org/379293004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282198 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -42,7 +42,7 @@ vars = {
   "google_toolbox_for_mac_revision": "662",
   "libaddressinput_revision": "300",
   "libphonenumber_revision": "621",
-  "libvpx_revision": "281854",
+  "libvpx_revision": "280676",
   "lss_revision": "26",
   "sfntly_revision": "239",
   "lighttpd_revision": "33737",

content/browser/media/media_browsertest.cc

@@ -224,9 +224,7 @@ IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv420pVp8)) {
   RunColorFormatTest("yuv420p.webm", "ENDED");
 }
 
-// TODO(johannkoenig): Reenable after landing libvpx roll
-// http://www.crbug.com/392309
-IN_PROC_BROWSER_TEST_F(MediaTest, DISABLED_Yuv444pVp9) {
+IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv444pVp9)) {
   RunColorFormatTest("yuv444p.webm", "ENDED");
 }