Pin the Module after we register a hook....

Pin the Module after we register a hook.

This shouldn't be needed since the hook machinery is responsible to load our DLL when it's needed, and we only need to register hooks for threads running in the IE process, but we received a dump for a user where the Broker crashed because of a call from the hook machinery to an unmapped address, and this address is within a range where we have seen the ceee_ie dll sit in other debugging session, and in the crash dump, the ceee_ie dll isn't part of the module list.

BUG=66434
TEST=None

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69044

[Jói, 2010-12-10 19:42:17]

LGTM

Please reassign the bug to me as WillMerge once the change has landed, I will
see if there is any chance of merging this to M9 soon, seeing as it's a trivial
fix to a crash seen in the wild.