Revert 212948 "Made MessagePump a non-thread safe class."
r212948 broke Mac Builder: http://build.chromium.org/p/chromium.memory/builders/Mac%20ASAN%20Builder/builds/25623
> Made MessagePump a non-thread safe class.
>
> This CL makes MessagePump a non-thread safe class to make sure thread-bound resources (such as the UI window used for pumping messages on Windows) are freed on the correct thread.
>
> Handling of incoming tasks and synchronization between different threads was moved out to a separate class - IncomingTaskQueue reducing the number of locks to be taken while posting a task to one. Posting tasks via both MessageLoop and MessageLoopProxyImpl is now routed via IncomingTaskQueue.
>
> BUG=241939
>
> Review URL: https://chromiumcodereview.appspot.com/17567007
TBR=alexeypa@chromium.org
Review URL: https://codereview.chromium.org/19737005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@212952 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: c9904b429860b83606492d4fe8f1b232c04753b5
22 files changed