Add GPU.ANGLE.Buffer11CPUMemoryMB to histograms.xml

Add GPU.ANGLE.Buffer11CPUMemoryMB to histograms.xml

This histograms tracks the sum of CPU memory allocations of Buffer11
copies in order to measure the impact of copy pruning methods.

BUG=angleproject:516
Committed: https://crrev.com/f2643788070fcf5760705f2f13d0c0f4e24b7971
Cr-Commit-Position: refs/heads/master@{#342355}

[Corentin Wallez, 2015-08-06 18:19:31]

cwallez@chromium.org changed reviewers:
+ asvitkine@chromium.org, jmadill@chromium.org, rkaplow@chromium.org

[Corentin Wallez, 2015-08-06 18:20:09]

cwallez@chromium.org changed reviewers:
+ cwallez@chromium.org

[Corentin Wallez, 2015-08-06 18:20:10]

Trivial addition of an histogram, please take a look.

[rkaplow, 2015-08-06 18:21:01]

lgtm

[Corentin Wallez, 2015-08-06 18:22:36]

The CQ bit was checked by cwallez@chromium.org

[Corentin Wallez, 2015-08-06 18:22:55]

On 2015/08/06 18:21:01, rkaplow wrote:
> lgtm

Thank you for the vast review!

[commit-bot: I haz the power, 2015-08-06 18:23:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1280743003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1280743003/1

[commit-bot: I haz the power, 2015-08-06 20:09:33]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-06 20:09:34]

Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[Corentin Wallez, 2015-08-06 21:30:23]

The CQ bit was checked by cwallez@chromium.org

[commit-bot: I haz the power, 2015-08-06 21:30:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1280743003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1280743003/1

[commit-bot: I haz the power, 2015-08-06 23:16:14]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-06 23:16:15]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[Corentin Wallez, 2015-08-07 14:28:28]

The CQ bit was checked by cwallez@chromium.org

[commit-bot: I haz the power, 2015-08-07 14:28:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1280743003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1280743003/1

[commit-bot: I haz the power, 2015-08-07 15:12:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-07 15:13:45]

Patchset 1 (id:??) landed as
https://crrev.com/f2643788070fcf5760705f2f13d0c0f4e24b7971
Cr-Commit-Position: refs/heads/master@{#342355}