In order to make sure that Chromium's DumpRenderTree port does not potentially break during the cutover of the compositor to use GraphicsContext3D, the Chromium dependencies need to be rolled forward to r59961 to pick up the implementation of the new WebGraphicsContext3D::initialize(Attributes, WebView*, bool).
LGTM.
Created attachment 68126 [details] Patch
Committed r67873: <http://trac.webkit.org/changeset/67873>