Instead of having the malloc debug heap dump code live in frameworks
code, call into malloc debug to do the dump.
Test: Ran am dumpheap -n <PID> <FILE> of a process with and without
Test: malloc debug enabled.
Change-Id: I7911a3ee7dcbc79dd11003a24e27ff99c8301d43
Merged-In: I7911a3ee7dcbc79dd11003a24e27ff99c8301d43
(cherry picked from commit 38e2c3bc9c)