Revert 119200 - Revert 119198 - First pass at implementing the MessageLoop interface. This includes a simple
example and a helper class. The current example just asserts due to thread
checks we have in there now, but this should provide a good starting point.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9097006

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Review URL: https://chromiumcodereview.appspot.com/9290040

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Review URL: https://chromiumcodereview.appspot.com/9234068

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119268 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed