Update from https://crrev.com/328418

This includes the switch to libc++ on android.

Fixes outside of the rolled code:

*) ::TestSuite -> base::TestSuite
*) base::ScopedPtrHashMap's second parameter Value->scoped_ptr<Value>
*) re2 std::tr1 changes from upstream libc++ changes
*) tracked_objects:: api changes in mojo/common/task_tracker*

Review URL: https://codereview.chromium.org/1128733002