Revert 191173 "Check in a custom-built import library for user32..."

Revert 191173 "Check in a custom-built import library for user32..."

> Check in a custom-built import library for user32 exports up to Windows XP SP2/SP3, which is used by chrome.dll in preference to the Platform SDK's user32.lib import library.
> Custom build an import library for Chrome's post-WinXP imports, that binds to a fictional "user32-delay.dll".
> Implement and test a delay load hook that diverts dynamic loading of any dll "foo-delay.dll" to "foo.dll".
> 
> R=cpu@chromium.org
> BUG=176040
> 
> 
> Review URL: https://chromiumcodereview.appspot.com/12295040

TBR=siggi@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=191179

[rlarocque, 2013-03-28 18:38:10]

Committed patchset #1 manually as r191179.