Revert 285028 "Pepper: Remove LOAD_MODULE SRPC call in SFI mode."

Revert 285028 "Pepper: Remove LOAD_MODULE SRPC call in SFI mode."

Reason for revert: r285028 seems to have broken the ThreadSanitizer build.

> Pepper: Remove LOAD_MODULE SRPC call in SFI mode.
> 
> This change puts nexe information in the parameters for starting a NaCl
> plugin instead of sending that information over SRPC. This may remove the
> need for that IPC round trip entirely; perhaps we could report load failure
> as part of the RPCs for starting sel_ldr or performing StartModule().
> 
> nacl_defines.gypi as added as a dependency in components/components_tests.gyp
> because nacl_process_host.h now includes
> "native_client/src/public/nacl_file_info.h", which requires nacl_defines.
> 
> BUG=333950
> R=bbudge@chromium.org, brettw@chromium.org, hidehiko@chromium.org, jschuh@chromium.org, mseaborn@chromium.org, sky@chromium.org
> 
> Review URL: https://codereview.chromium.org/332463003

TBR=teravest@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=285120

[Derek Bruening, 2014-07-24 02:35:10]

Committed patchset #1 manually as r285120.