Simplify HeapVectorBacking<> usage.

Simplify HeapVectorBacking<> usage.

Reorder HeapAllocator.h declarations to let the compiler handle
supplying the default trait argument to HeapVectorBacking<>.

R=
BUG=

Committed: https://crrev.com/75cc3d2bfcfa07fb237ae04773496b31bbb59e15
Cr-Commit-Position: refs/heads/master@{#393749}

[sof, 2016-05-14 06:32:18]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2016-05-14 06:32:19]

please take a look.

[haraken, 2016-05-14 07:24:39]

LGTM

[sof, 2016-05-14 07:55:45]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-05-14 07:56:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1985473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1985473002/1

[commit-bot: I haz the power, 2016-05-14 20:34:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-14 20:36:31]

Description was changed from

==========
Simplify HeapVectorBacking<> usage.

Reorder HeapAllocator.h declarations to let the compiler handle
supplying the default trait argument to HeapVectorBacking<>.

R=
BUG=
==========

to

==========
Simplify HeapVectorBacking<> usage.

Reorder HeapAllocator.h declarations to let the compiler handle
supplying the default trait argument to HeapVectorBacking<>.

R=
BUG=

Committed: https://crrev.com/75cc3d2bfcfa07fb237ae04773496b31bbb59e15
Cr-Commit-Position: refs/heads/master@{#393749}
==========

[commit-bot: I haz the power, 2016-05-14 20:36:32]

Patchset 1 (id:??) landed as
https://crrev.com/75cc3d2bfcfa07fb237ae04773496b31bbb59e15
Cr-Commit-Position: refs/heads/master@{#393749}