New feature wait_for_log is added to wait for given pattern showing up in logcat

This function is used to wait for lines of logcat containing given pattern
showing up. It's useful to wait for response of RIL or modem since there
is usually no framework API to return such response.

Bug: None
Test: yes, locally

Change-Id: Ibfef067074667d2096d2b983b5a3b380cf9a0354
1 file changed
tree: f0fbde91162367e7a1e3482bd4cfb3c158d4ae62
  1. acts/
  2. acts_tests/
  3. tools/
  4. wts-acts/
  5. Android.mk
  6. OWNERS
  7. PREUPLOAD.cfg