Hold mutator lock in DdmSendHeapSegments for all spaces

Previously we were releasing the mutator lock in DdmSendHeapSegments
and only reacquiring it for RosAlloc spaces. This was causing problems
since the HeapChunkCallback access object fields through mirror.

Bug: 17950534
Change-Id: I6bd71f43e84eae8585993da656bf1577095607a9
1 file changed