[arm] Decrease the size of the assembler class by allocating buffers of pending constants on the he…

[arm] Decrease the size of the assembler class by allocating buffers of pending constants on the heap.

BUG=chromium:521828
LOG=N

Committed: https://crrev.com/ce751ccf1ec2cc3765ef7031d107f5a22300f43a
Cr-Commit-Position: refs/heads/master@{#30602}

[Igor Sheludko, 2015-09-04 16:41:19]

ishell@chromium.org changed reviewers:
+ jkummerow@chromium.org

[Igor Sheludko, 2015-09-04 16:41:20]

PTAL, on arm64 the MacroAssembler happened to be 560 bytes.

[Jakob Kummerow, 2015-09-04 18:24:22]

lgtm

[Igor Sheludko, 2015-09-05 08:52:18]

The CQ bit was checked by ishell@chromium.org

[commit-bot: I haz the power, 2015-09-05 08:52:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310863005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310863005/1

[commit-bot: I haz the power, 2015-09-05 08:53:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-05 08:54:06]

Patchset 1 (id:??) landed as
https://crrev.com/ce751ccf1ec2cc3765ef7031d107f5a22300f43a
Cr-Commit-Position: refs/heads/master@{#30602}