Migration from jb-mr2 to master for Widevine CDM

Android development of the widevine CDM has been done
on the jb-mr2 branch of the cdm code base.  This CL
contains a merge of that jb-mr2 work to CDM master, and
also reflects the evolution of the common Modular DRM
code base since jb-mr2 branched.

Change-Id: I1d7e1a12d092c00044a4298261146cb97808d4ef

libwvdrmengine/cdm/src/timer.cpp

@@ -26,7 +26,10 @@ class Timer::Impl : virtual public android::RefBase {
 
    private:
     virtual bool threadLoop() {
-      sleep(period_);
+      struct timeval timeout;
+      timeout.tv_sec = period_;
+      timeout.tv_usec = 0;
+      TEMP_FAILURE_RETRY(select(0, NULL, NULL, NULL, &timeout));
       handler_->OnTimerEvent();
       return true;
     }