DEPS.xwalk: Roll chromium-crosswalk (634d34e -> 0eae511).

0eae511 Merge pull request #143 from halton/nacl
0151e36 [Backport] Add base.gyp:base_static as dependency of nacl
component
[Linux] Add NaCl support

Based on NaCl component work (http://crbug.com/244791) from upstream,
this commit is to add Native Client(aka NaCl) support.
It now can run examples from nacl sdk.
  $ cd <nacl_sdk_dir>/pepper_canary/example
  $ TOOLCHAIN=newlib make serve
  $ xwalk http://localhost:5103

Next steps:
 * Enable PNaCl
 * Enable on Tizen

BUG=XWALK-1338