Android R Beta 2
Merge changes I01907c10,I25b71054,I61d607a4,I6ff1f602,If252350d, ...

* changes:
  libdmabufheap: Add a C test for libdmabufheap
  libdmabufheap: Add a C wrapper for BufferAllocator class
  lidmabufheap: Add some tests for CpuSyncStart() and CpuSyncEnd()
  libdmabufheap: Implement CpuSyncStart() and CpuSyncEnd().
  libdmabufheap: Add some tests for Alloc()
  libdmabufheap: Add Alloc()
  libdmabufheap: Add IonAlloc()
  libdmabufheap: Add MapNameToIonHeap()
tree: c6146e43b1b99b3aedcc4726b32ddcd5e0d10f9d
  1. include/
  2. tests/
  3. Android.bp
  4. BufferAllocator.cpp
  5. BufferAllocatorWrapper.cpp