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* Added a way to notify a Module that it's been attached to a ProcessThread. The benefit of this is to give the module a way to wake up the thread when it needs work to happen on the worker thread, immediately. Today, module instances are typically registered with a process thread outside the control of the modules themselves. I.e. they typically don't know about the process thread they're attached to. * Improve ProcessThread's WakeUp algorithm to not call TimeUntilNextProcess when a WakeUp call is requested. This is an optimization for the above case which avoids the module having to acquire a lock or do an interlocked operation before calling WakeUp(), which would ensure the module's TimeUntilNextProcess() implementation would return 0. BUG=2822 R=stefan@webrtc.org Review URL: https://webrtc-codereview.appspot.com/39239004 Cr-Commit-Position: refs/heads/master@{#8527} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8527 4adac7df-926f-26a2-2b94-8c16560cd09d