Set Ganesh cache limit based on system physical RAM

Set Ganesh cache limit based on system physical RAM

Merge to M-59

This is a temporary mitigation to alleviate web developer complaints
that canvas rendering slows down with large working sets of images. It also reduces the cache size for very low end devices.

BUG=683994
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2836063003
Cr-Commit-Position: refs/heads/master@{#467338}
(cherry picked from commit c78b8bf07f4819342ee6d99796100cc62880718b)

Review-Url: https://codereview.chromium.org/2854623003 .
Cr-Commit-Position: refs/branch-heads/3071@{#333}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/5e293f6b0e7c1d0731e5b87e66417e2545248ba1

[Stephen Chennney, 2017-05-01 19:44:07]

schenney@chromium.org changed reviewers:
+ junov@chromium.org

[Stephen Chennney, 2017-05-01 19:44:07]

I'm landing the M-59 merge.

[Stephen Chennney, 2017-05-01 19:45:39]

Description was changed from

==========
Set Ganesh cache limit based on system physical RAM

Merge to M-59

This is a temporary mitigation to alleviate web developer complaints
that canvas rendering slows down with large working sets of images. It also
reduces the cache size for very low end devices.

BUG=683994
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2836063003
Cr-Commit-Position: refs/heads/master@{#467338}
(cherry picked from commit c78b8bf07f4819342ee6d99796100cc62880718b)
==========

to

==========
Set Ganesh cache limit based on system physical RAM

Merge to M-59

This is a temporary mitigation to alleviate web developer complaints
that canvas rendering slows down with large working sets of images. It also
reduces the cache size for very low end devices.

BUG=683994
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2836063003
Cr-Commit-Position: refs/heads/master@{#467338}
(cherry picked from commit c78b8bf07f4819342ee6d99796100cc62880718b)

Review-Url: https://codereview.chromium.org/2854623003 .
Cr-Commit-Position: refs/branch-heads/3071@{#333}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/5e293f6b0e7c1d0731e5b87e6641...
==========

[Stephen Chennney, 2017-05-01 19:45:41]

Committed patchset #1 (id:1) manually as
5e293f6b0e7c1d0731e5b87e66417e2545248ba1.

[Justin Novosad, 2017-05-02 15:23:56]

thx.