Add gomobile to infra's Go deps, and also roll.

go/deps.py

 #!/usr/bin/env python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A tool to prepare a GOPATH with vendored Go dependenies.
 
 We abuse Glide by using it for GOPATH-based vendoring, while it is supposed to
 be used for "Vendor Experiment"-based vendoring.
 
@@ skipping 32 matching lines @@
 # be installed via "go install" after Glide fetches all vendored dependencies.
 # See 'install' function below.
 VENDORED_TOOLS = [
   'github.com/golang/lint/golint',
   'github.com/golang/protobuf/protoc-gen-go',
   'github.com/kisielk/errcheck',
   'github.com/maruel/panicparse/cmd/pp',
   'github.com/maruel/pre-commit-go/cmd/covg',
   'github.com/maruel/pre-commit-go/cmd/pcg',
   'github.com/smartystreets/goconvey',
+  'golang.org/x/mobile/cmd/gomobile',
   'golang.org/x/tools/cmd/callgraph',
   'golang.org/x/tools/cmd/fiximports',
   'golang.org/x/tools/cmd/godex',
   'golang.org/x/tools/cmd/goimports',
   'golang.org/x/tools/cmd/gomvpkg',
   'golang.org/x/tools/cmd/gorename',
   'golang.org/x/tools/cmd/guru',
   'golang.org/x/tools/cmd/oracle',
   'golang.org/x/tools/cmd/stringer',
   'google.golang.org/api/google-api-go-generator',
@@ skipping 477 matching lines @@
     if opts.action == remove:
       return remove(workspace, opts.pkg)
     assert False, 'Unreachable'
   except CallFailed as exc:
     print >> sys.stderr, str(exc)
     return 1
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))