Revert 180482

Revert 180482
> Merge 179932 - Ensure that ChromeFrame does not interfere with non ChromeFrame requests initiated by IE.
> 
> ChromeFrame patches the urlmon transaction object vtable to ensure that top level requests initiated
> by IE are intercepted. Methods patched include the Start/StartEx and Read. The Read method is patched
> to ensure that we return unprocessed data back to urlmon in case the site is not switched into ChromeFrame.
> 
> There is a race condition between the time the data is discarded and a new request is created as the
> IInternetProtocol interface ptr can be reused. This causes us to return stale data from a previous request to
> IE. The data is keyed off the IInternetProtocol interface ptr.
> 
> Fix is to patch the Abort and Terminate methods of the transaction vtable and destroy the data for the protocol.
> 
> Fixes bug http://code.google.com/p/chromium/issues/detail?id=168308
> 
> BUG=168308
> Review URL: https://chromiumcodereview.appspot.com/12093077
> 
> TBR=ananta@chromium.org
> Review URL: https://chromiumcodereview.appspot.com/12178023

TBR=huangs@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=185959

[kerz_chromium, 2013-03-04 20:21:08]

Committed patchset #1 manually as r185959.

[huangs, 2013-03-04 20:28:27]

I'm unfamiliar with this code, and am not even an OWNER.  Please refer to
anata@, erikwright@, grt@, or robertshield@ instead.

[robertshield, 2013-03-04 20:29:37]

lgtm