Revert 252920 "Update shell_aura.cc to get aura::Window for disp..."

Experimental revert.  It seems that
PPAPINaClGLibcTest.URLLoader1
is failing more often than it used to after sometime around this change.

This is the only change that seems plausible, especially given the error 
message at the beginning of the test:
PPAPINaClGLibcTest.URLLoader1 (run #1):
[ RUN      ] PPAPINaClGLibcTest.URLLoader1
[2776:2884:0224/095958:3880400:WARNING:chrome_browser_main_win.cc(321)] Command line too long for RegisterApplicationRestart
[3500:3312:0224/100000:ERROR:singleton_hwnd.cc(43)] Cannot create windows on non-UI thread!
HTTP server started on 127.0.0.1:51814...
sending server_data: {"host": "127.0.0.1", "port": 51814} (36 bytes)
...

garykac will send out more details about our investigation of this issue.

Crossing my fingers.

> Update shell_aura.cc to get aura::Window for dispatcher.
> 
> This change is related to CL: https://codereview.chromium.org/172743002 where
> RootWindow was renamed to WindowEventDispatcher.
> 
> This fixes the Ozone build which uses shell_aura.cc
> 
> TBR=ben@chromium.org
> NOTRY=true
> 
> Review URL: https://codereview.chromium.org/177713003

TBR=dnicoara@chromium.org

Review URL: https://codereview.chromium.org/178553004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252976 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252976
NaCl SDK: Remove unsupported dev headers.

We shouldn't provide NaCl SDK headers for interfaces which are not available in
NaCl. This change removes PPB_ interfaces that are not built on OS_NACL in
ppapi/thunk/interfaces_ppb_public_dev.h

Tested with build_sdk.py locally this time.

BUG=280338
R=binji@chromium.org

Review URL: https://codereview.chromium.org/173883006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252978 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252978