Oilpan: Reorder methods of BaseHeap, NormalPageHeap and LargeObjectHeap
Oilpan: Reorder methods of BaseHeap, NormalPageHeap and LargeObjectHeap

The current order is just random and inconsistent.
This CL reorders them in the order of BaseHeap, NormalPageHeap and LargeObjectHeap.

BUG=420515

Review URL: https://codereview.chromium.org/920363002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@190189 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk