Migrate ionHeapSize

Test: Ran adb shell cmd stats pull-source 10056
Test: Ran adb shell cmd stats pull-source 10061
Change-Id: I6501109a94875c69078dea0ac07dcce3bc9641e3
1 file changed
tree: be637ff807934128fd8dbde0d515cb458c26c96f
  1. apex/