This subdirectory maintains the classes and tests for the Offline Pages Task Queue, a general framework for sequencing work that may require multiple asynchronous calls before completing.
This is located in //components/offline_pages/task as a temporary location so that it can be shared with code in //chrome/browser/android/explore_sites without depending on all the other unrelated code in offline pages. The intention is that this code could be moved to a more general location and more broadly used in the rest of Chrome.