Revert 113321 (speculative revert for http://crbug.com/106657 and a few other problems)

Revert 113321 (speculative revert for http://crbug.com/106657 and a few other problems)
- Provide windows notifictaion of thread termination

Provide an automatic fallback scan of the linker
list of notifcation callbacks via DllMain.

This fallback is ONLY used if there are no notifications
coming via the linker list.  This allows all existing
code to continue working as it does today, and provides
thread teardown notifcatino on XP even though we use
the LoadLibrary call.

It is a minimal change, suitable for pushing to other
channels (beta? stable?).

r=cpu
BUG=103209
Review URL: http://codereview.chromium.org/8550009

TBR=jar@chromium.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=113342

[Nico, 2011-12-07 04:54:24]

This revert helped. It fixed nacl_integration on the waterfall, and ui_tests on
the xp bots. For example:
http://build.chromium.org/p/chromium/builders/XP%20Tests%20%283%29/builds/724...
:

WorkerTest.SingleSharedWorker: 
.\test\automation\proxy_launcher.cc(287): error: Value of: exit_code
  Actual: -2147483645
Expected: 0
.\test\ui\ui_test.cc(150): error: Value of: assertions.size()
  Actual: 2
Expected: expected_errors_
Which is: 0
The following error(s) occurred in the application during this test:

[3108:1016:1473140:FATAL:dllmain.cc(116)] Check failed: *it >
p_thread_callback_dllmain_later_entry (00000000 vs. 01C36800)

[3108:1016:1473578:FATAL:dllmain.cc(116)] Check failed: *it >
p_thread_callback_dllmain_later_entry (00000000 vs. 01C36800)
.\test\ui\ui_test.cc(160): error: Value of: actual_crashes
  Actual: 2
Expected: expected_crashes_
Which is: 0
Encountered an unexpected crash in the program during this test.