Revert "Remove partial_sdk step from main buildbot"
Revert "Remove partial_sdk step from main buildbot"

This reverts r5912 for now.  The browser_dynamic_library_test insists
on getting a libppruntime.so from the SDK, and removing the step means
it won't have been updated for a change in the ppapi_proxy sources.

BUG=none
TEST=none

R=polina@google.com,mseaborn@google.com

Review URL: http://codereview.chromium.org/7312018

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@5923 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client